Fundamento y generalidades de la construcción de modelos estadísticos multinivel en el ámbito de la investigación en salud

Este trabajo tiene como objetivo presentar una mirada global de la aplicabilidad de los modelos de análisis multinivel en el ámbito de la investigación sanitaria. Ofrece información sobre los fundamentos teóricos, metodológicos y estadísticos y, además, menciona los pasos básicos para la construcción de estos modelos, y da ejemplos de su uso, según la estructura jerárquica de los datos. Cabe resaltar que, antes de utilizar estos modelos, se requiere contar con un soporte teórico sobre la necesidad de uso y una valoración estadística que dé cuenta del porcentaje de varianza explicada por el efecto de agrupación de las observaciones. Los requisitos para llevar a cabo este tipo de análisis dependen de condiciones especiales como el tipo de variables, la cantidad de unidades por nivel o el tipo de estructura jerárquica. Se concluye que los modelos de análisis multinivel son una herramienta útil para lograr la integración de información, dadas la complejidad de las relaciones y las interacciones que determinan la mayoría de las condiciones de salud, incluida la pérdida de independencia entre las unidades de observación.

This topic review aims to present a global vision of multilevel analysis models' applicability to health research, explaining its theoretical, methodological, and statistical foundations. We describe the basic steps to build these models and examples of their application according to the data hierarchical structure. It ir worth noticing that before using these models, researchers must have a rationale for needing them, and a statistical evaluation accounting for the variance percentage explained by the observations grouping effect. The requirements to conduct this type of analysis depends on special conditions such as the type of variables, the number of units per level, or the type of hierarchical structure. We conclude that multilevel analysis models are a useful tool to integrate information, considering the complexity of the relationships and interactions involved in most health conditions, including the loss of independence between observation units.

Aseguramiento y control de la calidad de los datos en un estudio de cohorte en Colombia

Introducción: La calidad de los datos facilita garantizar la fiabilidad de los estudios observacionales. Objetivo: Describir el aseguramiento y el control de calidad para mantener la fiabilidad y la validez del dato en un estudio de cohorte. Métodos: Presentar el manejo de datos implementado dentro de un seguimiento de enfermos renales crónicos cuya exposición fue un programa de protección renal comparado con el tratamiento convencional y su asociación con desenlaces clínicos. Se evaluó el cambio en la frecuencia de errores después de implementar el plan y la reproducibilidad del ingreso de registros a las bases de datos. Resultados: Se documentó una disminución progresiva en los errores cometidos en la captación de datos. El valor de Kappa entre los recolectores de la información para las variables clínicas más importantes fue 0,960 para la depuración de creatinina 150 mg/dL; 0,730 para la alteración del sedimento urinario; 0,956 para la asignación de estadio al ingreso. Los coeficientes de correlación intraclase para la identificación de las cifras de presión arterial sistólica fue 0,996; para la de presión arterial diastólica 0,993 y para los niveles de creatinina sérica al diagnóstico 0,995. Discusión: La calidad de los datos comienza con el reconocimiento de los retos y dificultades que implica su responsable captación, de ahí el aporte de la estandarización de los procesos y el personal que los lleve a cabo en forma idónea. Estudios evidencian que muchos procesos de mejora surgen en el desarrollo de la investigación sin protocolos preestablecidos. Conclusión: La reducción en la proporción y el tipo de error durante el proceso de captación de datos se debe a su identificación temprana y la corrección de instructivos, del instrumento de control de diligenciamiento y de la capacitación continua del personal. El análisis mostró una buena concordancia interevaluador.

Introduction: Data quality makes it easier to ensure that observational studies are reliable. Objective: To describe assurance and quality control to maintain data reliability and validity in a cohort study. Methodology: We present the data management strategies implemented in a study that followed patients of chronic kidney disease who were in a renal protection program and compared them with those undergoing conventional treatment to observe its association with clinical outcomes. We assessed the changes in error frequency after implementing the plan along with the reproducibility of the strategies for entering records into the databases. Results: We documented a progressive decrease of data collection errors. The Kappa values among data collectors for the most important variables were: 0.960 for creatinine clearance 150 mg/dl; 0.730 for urinary sediment alteration and 0.956 for stage allocation upon admission. The intraclass correlation coefficient for the identification of systolic blood pressure was 0.996; for diastolic blood pressure, the coefficient was 0.993 and for serum creatinine levels at diagnosis, the value was 0.995. Discussion: Data quality begins with the recognition of the challenges and difficulties involved in responsible data collection, hence the contribution of standardized processes and personnel to carry them out in a suitable manner. Studies show that many improvement processes arise in the development of research without pre-established protocols. Conclusion: The reduction in error ratio and type during the data collection process are the result of the early identification of erroneously entered or missing data, the correction of the guidelines for completing forms as well as of the instruments for detecting errors and continuous training of the staff. The analysis showed good inter-rater reliability.

Viés Atencional na Esquizofrenia: uma Revisão Crítica da Literatura / Attentional Bias in Schizophrenia: a Critical Review of Literature

O viés atencional, compreendido como a tendência de processar informações de acordo com a valência emocional ou significado, pode contribuir para a vulnerabilidade a transtornos psiquiátricos. Este estudo apresenta uma revisão da literatura sobre pesquisas empíricas que investigaram associações entre viés atencional e esquizofrenia. A busca foi realizada nas bases de dados PsycInfo, Web of Science, MedLine e Scopus. Um total de 641 estudos foi identificado. Após a aplicação dos critérios de elegibilidade, 16 artigos foram incluídos na amostra final, com a inclusão de um artigo a partir das referências dos estudos da amostra. Foram observados a utilização de tarefas e estímulos diversos, que apresentaram resultados variados, indicando, por um lado, a presença de viés atencional, e, por outro, interferência equivalente de estímulos emocionais em pacientes e pessoas saudáveis. São necessários mais estudos que, além de investigarem a associação entre viés atencional e esquizofrenia, permitam o controle de variáveis confundidoras.

Attentional bias, understood as the tendency to process information according to emotional valence or meaning, can contribute to vulnerability to psychiatric disorders. This study presents a review of empirical research literature that investigated the associations between attentional bias and schizophrenia. The search was conducted in the PsycInfo, Web of Science, MedLine, and Scopus databases. A total of 641 studies were identified. After applying eligibility criteria, 16 articles were included in the final sample, including one article retrieved from the references of the sample studies. Various tasks and stimuli were observed, yielding diverse results, indicating, on the one hand, the presence of attentional bias, and on the other hand, equivalent interference from emotional stimuli in patients and healthy individuals. Further studies are needed that, in addition to investigating the association between attentional bias and schizophrenia, allow for the control of confounding variables.

Comparison of methods for controlling acquiescence bias in balanced and unbalanced scales / Comparação de métodos para o controle do viés da aquiescência em escalas balanceadas e desbalanceadas / Comparación de métodos para controlar el sesgo de aquiescencia en escalas balanceadas y no balanceadas

Controlling acquiescence bias typically involves the application of positive and negative keyed items. However, little is known about the effect of balancing positive and negative items on bias control. The aim of this study was to compare three Confirmatory Factor Analysis models (without control, MIMIC, and Random Intercept) to recover the factor structure of unbalanced and balanced instruments, using simulated and real data (from an instrument that assesses Personality). By controlling for acquiescence, the results indicated that the performance of balanced scales was better than that of unbalanced scales, as well as in the absence of control for response bias, when considering balanced and unbalanced scales. Thus, this research suggests the possibility of controlling acquiescence through balanced instruments associated with the use of statistical methods in modeling.(AU)

O controle do viés de aquiescência normalmente envolve a aplicação de itens positivos e negativos. Contudo, pouco se sabe sobre o efeito do balanceamento entre itens positivos e negativos sobre o controle do viés. O objetivo deste estudo foi comparar três modelos de Análise Fatorial Confirmatória (sem controle, MIMIC e Intercepto Randômico) para recuperar a estrutura fatorial de instrumentos desbalanceados e balanceados, a partir de dados simulados e reais (procedentes de um instrumento que avalia Personalidade). Mediante o controle da aquiescência, os resultados indicaram que a performance de escalas balanceadas foi melhor do que de escalas desbalanceadas, bem como na ausência de controle desse viés de resposta, ao considerar as escalas balanceadas e desbalanceadas. Dessa maneira, esta pesquisa aponta para a possibilidade de controle de aquiescência por meio de instrumentos balanceados associada ao uso dos métodos estatísticos na modelagem.(AU)

El control del sesgo de aquiescencia involucra la aplicación de ítems positivos y negativos. Sin embargo, el efecto del equilibrio entre ítems positivos y negativos en el control del sesgo sigue siendo una pregunta abierta. En este sentido, el objetivo de este estudio fue comparar tres modelos de Análisis Factorial Confirmatorio (sin control, MIMIC e Intercepto Aleatorio) para recuperar la estructura factorial de instrumentos balanceados y desbalanceados, a partir de datos simulados y reales (a partir de un instrumento que evalúa personalidad). El control de este sesgo de respuesta indicó que el desempeño de escalas balanceadas fue mejor que el de escalas desbalanceadas, así como en la ausencia del control de la aquiescencia, al considerar escalas balanceadas y desbalanceadas. Por lo tanto, esta investigación sugiere la posibilidad de controlar este sesgo de respuesta por medio de instrumentos balanceados asociados con el uso de métodos estadísticos modelado.(AU)

Interferencia generada por la lipemia en la medición de constituyentes bioquímicos

Introducción. La turbidez por lipemia en las muestras para diagnóstico es una de las principales causas de la aparición de sesgos clínicamente significativos en la medición de magnitudes bioquímicas. Objetivo. Valorar la interferencia por lipemia en la medición de 25 constituyentes bioquímicos en dos analizadores con tecnología de química seca (Vitros 7600®) y química liquida (Atellica® Solution). Métodos. Estudio pre-experimental con pre y posprueba. Se añadieron cantidades crecientes de una emulsión lipídica de nutrición parenteral a siete alícuotas de una mezcla de sueros y se determinó por duplicado la influencia del interferente en 25 constituyentes. Se calculó el porcentaje relativo de desviación de la concentración del constituyente por influencia de la turbidez con respecto a una muestra sin interferente. Se establecieron límites de tolerancia para la interferencia utilizando tres criterios: del distribuidor de reactivos, del error sistemático deseable y del error máximo admisible. Resultados. Los constituyentes que presentaron los mayores sesgos para el analizador de química liquida fueron: fósforo (-84,72%), ALT (+81,25%) y AST (-75,76%), mientras que para la plataforma de química seca los constituyentes: ALT (-79,41%), CK (-28,92%) y lipasa (+24,85%). Se detectó interferencia significativa en diferente número de los constituyentes de acuerdo con el criterio de límite tolerable utilizado. Conclusiones. Los distintos resultados encontrados según la metodología y el analizador utilizado, además de la falta de replicabilidad de los ensayos para la valoración de interferencia por lipemia, origina la necesidad de armonizar los procesos e instaurar límites idénticos de interferencia tolerables entre los laboratorios y proveedores de insumos.

Introduction. Turbidity due to lipemia in diagnostic samples is one of the main causes of the appearance of clinically significant biases in the measurement of biochemical magnitudes. Objective. To assess the interference by lipemia in the measurement of 25 biochemical constituents in two analyzers with dry chemistry technology (Vitros 7600®) and liquid chemistry (Atellica® Solution). Methods. Pre-experimental study with pre and post test. Increasing amounts of a parenteral nutrition lipid emulsion were added to seven aliquots of pooled sera and the influence of the interferent on 25 constituents was determined in duplicate. The relative percentage deviation of the concentration of the constituent due to the influence of turbidity with respect to a sample without interference, was calculated. Tolerance limits for interference were established using three criteria: reagent distributor, desirable systematic error, and maximum permissible error. Results. The constituents that presented the greatest biases for the liquid chemistry analyzer were: Phosphorus (-84.72%), ALT (+81.25%) and AST (-75.76%), while for the dry chemistry platform the constituents, ALT (-79.41%), CK (-28.92%) and lipase (+24.85%). Significant interference was detected in a different number of constituents according to the tolerable limit criteria used. Conclusions. The different results found according to the methodology and the analyzer used, in addition to the lack of replicability of the tests for the evaluation of interference by lipemia, originates the need to harmonize the processes and establish identical limits of tolerable interference between the laboratories and suppliers of inputs.

Risk of bias in dentistry-related randomized controlled trials in spanish language journals

Objectives: To assess the risk of bias (RoB) of randomized controlled trials (RCTs) published in dental journals in the Spanish language. Methods: A systematic retrospective survey was conducted of all RCTs published from 1980 to 2019 in dentistry Spanish and Latin American journals. We extracted data and performed RoB assessments using the Cochrane Risk of Bias tool. Results: 292 RCTs published in 51 journals were included. The best-rated domains were incomplete outcome data, selective reporting, and other biases. The domains assessed with higher proportions of an unclear or high risk of bias were sequence generation, allocation concealment, and blinding of outcome assessment. There is a low proportion of RCTs published in Spanish language journals. However, the number has been increasing over the years, and the low risk of bias assessment rates across domains show an increasing trend. Conclusions: A low percentage of Spanish-language dental journals issue RCTs. Our assessment of these RCTs' RoB suggests higher difficulties in the design and conduction phase than in the posterior reporting stage.

Reporting of conflict of interests, source of funding, and ethics committee approval in randomized trials of three clinical specialties published in Spanish language

Background: Confidence in the results reported by randomized clinical trials (RCTs) depends mainly on the internal validity of the trial and its conduct, but also on other aspects related to health research such as the complete reporting of conflicts of interest (COI), funding sources and approval by ethics committees. Bias in the study results may arise from any one of these elements. Prior studies have explored the reporting of these items in the medical literature, but there are no reports on RCTs published in Spanish and Latin American journals. This study aimed to evaluate the reporting of COIs, funding sources, and approval by ethics committees of RCTs published in Spanish and Latin American journals in dentistry, geriatrics and neurology. Methods: We did a systematic retrospective survey of all RCTs published from 1990 to 2018 in dentistry, neurology, and geriatrics journals published in Spain and Latin America and included in the BADERI database (Iberoamerican journals and trials database by its initials in Spanish). We completed with hand searching. We included RCTs with a recoverable full text published between 1990 and 2018. We extracted data on sources of funding, COI statements, and ethics reviews. The extraction of these items in the RCTs included was done independently by two pairs of reviewers and in parallel for each article, with a third independent reviewer resolving discrepancies. We analysed compliance for each item. Results: We identified RCTs in 69 journals from Spain and Latin American countries. Dentistry accounted for 75% (n = 52) of the journals, neurology 20.6% (n = 14), and geriatrics 4.4% (n = 3). Of the total number of RCTs included in this study (n = 392), only 102 (26%) reported the presence or absence of a COI, 103 (26%) studies reported funding, and 43 (36%) included the ethics committee approval. Conclusions: RCTs published in the Spanish language in dentistry, neurology, and geriatrics had poor compliance with the reporting of a COI, source of funding, and ethics committee approval. Future research should evaluate the accuracy and completeness of COI statements and their relationship to the funding source and direction of the results.

Using the cell phone while standing or walking affects balance and mobility in people with Parkinson's disease / O uso do celular em pé ou durante a caminhada afeta o equilíbrio e a mobilidade de pessoas com doença de Parkinson

Abstract Background Cell phones are part of peoples' lives. The literature indicates risks when cell phones are used during a secondary motor task. Studies addressing this topic in people with Parkinson's disease are still scarce. Objective To investigate the impact of daily dual tasks with cell phone on balance and mobility in people with Parkinson's disease, compared to healthy control peers. Methods Participants with Parkinson's disease and controls underwent three motor tasks: (1) Standing and walking without using a cell phone; (2) Standing and walking while talking on the phone; and (3) Standing and walking while texting messages on the phone. Assessments involved balance and mobility tests. Statistical analysis was performed with multivariate analysis of variance, comparing main effect for group (Parkinson's disease × control), task (using × not using cell phone) and interactions (group × task). Significance was set at 5%. Effect sizes are reported. Results Participants with Parkinson's disease showed worse balance (p = 0.001, effect size of 0.471) and mobility (p = 0.001, effect size of 0.472) than control peers. The use of cell phone while performing a secondary motor task affected both groups (p = 0.005, effect size of 0.673 for balance and p = 0.001, effect size of 0.549 for mobility). The dual task impact, however, was higher in the Parkinson's disease group (p = 0.009, effect size of 0.407 for mobility). Conclusion Daily dual tasks with cell phones increase imbalance and mobility risks in Parkinson's disease. People should be careful when using their cell phone while standing or walking.

Resumo Antecedentes Aparelhos celulares fazem parte da vida das pessoas. A literatura aponta riscos quando o uso do celular está associado a uma tarefa motora. Estudos abordando esse tema na doença de Parkinson são escassos. Objetivo Investigar o impacto de tarefas-duplas com o celular sobre equilíbrio e mobilidade de pessoas com doença de Parkinson, na comparação com controles saudáveis. Métodos Participantes com e sem doença de Parkinson foram submetidos a três tarefas: (1) Ficar em pé e caminhar sem o celular; (2) Ficar em pé e caminhar enquanto conversa ao celular; e (3) Ficar em pé e caminhar enquanto digita mensagens. As avaliações envolveram testes de equilíbrio e mobilidade. Os procedimentos estatísticos envolveram testes de análise múltipla de variâncias, com análise de efeito principal para os fatores grupo (doença de Parkinson x controle), tarefa (com celular × sem celular) e interação (grupo × tarefa). Significância foi estipulada em 5%. Tamanhos de efeito foram reportados. Resultados Participantes com doença de Parkinson apresentaram pior equilíbrio (p = 0,001; tamanho do efeito: 0,471) e mobilidade (p = 0,001; tamanho do efeito: 0,472) que controles. O uso do celular afetou ambos os grupos (p = 0,005, tamanho do efeito de 0,673 para equilíbrio e p = 0,001, tamanho do efeito de 0,549 para mobilidade). O impacto da tarefa-dupla, contudo, foi maior no grupo Parkinson (p = 0,009; tamanho do efeito de 0,407 para mobilidade). Conclusão Tarefas simultâneas com o celular causam desequilíbrio e problemas de mobilidade na doença de Parkinson. As pessoas devem ter cuidado ao utilizar celulares durante atividades em pé e ao caminhar.

Tamanho do efeito em estudos observacionais na área de Saúde Bucal Coletiva: importância, cálculo e interpretação / Size effect in observational studies in Public Oral Health: importance, calculation and interpretation

Resumo O objetivo deste estudo foi analisar a literatura científica da área de saúde bucal coletiva quanto ao cálculo, apresentação e discussão do tamanho do efeito em estudos observacionais. A literatura cientifica na área (2015 a 2019) foi analisada quanto: a) informações gerais (periódico e diretrizes aos autores, número de variáveis e desfechos), b) objetivo e coerência com o cálculo amostral apresentado; c) tamanho do efeito (apresentação, medida utilizada e coerência com a discussão dos dados e conclusão). Foram analisados 123 artigos, de 66 periódicos. A maioria dos artigos avaliados apresenta um único desfecho (74%) e não menciona a realização de cálculo amostral (69,9%). Dentre os que realizaram, para 70,3% havia coerência entre o cálculo amostral utilizado e o objetivo. Apenas 3,3% dos artigos mencionam o termo tamanho do efeito e 24,4% não o consideram na discussão dos resultados, apesar de terem calculado. A regressão logística foi a metodologia estatística mais utilizada (98,4%) e o Odds Ratio a medida de tamanho do efeito mais utilizada (94,3%), embora não tenha sido citada e discutida como uma medida de tamanho do efeito na maioria dos estudos (96,7%). Os pesquisadores, em sua maioria, restringiram a discussão dos resultados apenas à significância estatística encontrada nas associações testadas.

Abstract The objective of this study was to analyze the scientific literature in public oral health regarding calculation, presentation, and discussion of the effect size in observational studies. The scientific literature (2015 to 2019) was analyzed regarding: a) general information (journal and guidelines to authors, number of variables and outcomes), b) objective and consistency with sample calculation presentation; c) effect size (presentation, measure used and consistency with data discussion and conclusion). A total of 123 articles from 66 journals were analyzed. Most articles analyzed presented a single outcome (74%) and did not mention sample size calculation (69.9%). Among those who did, 70.3% showed consistency between sample calculation used and the objective. Only 3.3% of articles mentioned the term effect size and 24.4% did not consider that in the discussion of results, despite showing effect size calculation. Logistic regression was the most commonly used statistical methodology (98.4%) and Odds Ratio was the most commonly used effect size measure (94.3%), although it was not cited and discussed as an effect size measure in most studies (96.7%). It could be concluded that most researchers restrict the discussion of their results only to the statistical significance found in associations under study.

Análise da qualidade das evidências científicas sobre a eficácia e segurança nas bulas de anticoagulantes orais diretos comercializados no Brasil / Analysis of the quality of scientific evidence on efficacy and safety in the package leaflets of direct oral anticoagulants marketed in Brazil

Objetivo: Identificar e analisar a qualidade das evidências científicas sobre a eficácia e segurança dos anticoagulantes orais direto (DOAC) disponíveis nos ensaios clínicos referenciados nas bulas dos medicamentos comercializados no Brasil. Método: Trata-se de um descritivo documental dividido em duas etapas, sendo elas: (i) identificação e análise da disponibilidade das referências bibliográficas contidas nas bulas dos DOAC e (ii) análise da qualidade dos estudos contidos nas bulas através da ferramenta da Cochrane Risk of Bias RevMan versão 5.4. Foram analisados setes domínios de importâncias para ensino clínico, sendo que cada domínio foi classificado como alto, incerto ou baixo risco de viés, segundo a avaliação dos colaboradores. Resultados: Foram analisadas 10 bulas destinadas aos profissionais da saúde. Sendo que destas, foram avaliados 25 ensaios clínicos. A análise da qualidade das evidências científicas, referenciadas nas bulas para profissionais dos DOAC, mostrou que os estudos citados apresentaram consistência metodológica. Entretanto, na maioria dos estudos, os domínios foram classificados como viés incerto, ou seja, não foi possível identificar como esses pontos foram abordados nos estudos. Conclusão: Portanto, o presente estudo evidenciou que a qualidade dos ensaios clínicos referenciados nas bulas dos DOAC apresentou incertezas metodológicas em seus ensaios. Sugere-se a necessidade de normativas que estabeleçam atualizações do conteúdo informativo presente nas bulas profissionais e estabeleçam descrição dos métodos de forma clara e coesa (AU).

Objective: Identify and analyze the quality of scientific evidence on the efficacy and safety of direct oral anticoagulants (DOAC) available in clinical trials referenced in the package leaflets of drugs marketed in Brazil. Method: This is a descriptive documentary study divided into two stages: (i) identification and analysis of the availability of the bibliographic references contained in the package leaflets of DOACs and (ii) analysis of the quality of the studies contained in the package leaflets through the Cochrane Risk of Bias RevMan tool version 5.4. Seven domains of importance for clinical teaching were analyzed, and each domain was classified as high, uncertain or low risk of bias, according to the assessment of the collaborators. Results: Ten package leaflets intended for health professionals were analyzed. Of these, 25 clinical trials were evaluated. The analysis of the quality of the scientific evidence referenced in the package leaflets for health professionals showed that the cited studies presented methodological consistency. However, in most studies, the domains were classified as uncertain bias, i.e., it was not possible to identify how these points were addressed in the studies. Conclusion: Therefore, the present study evidenced that the quality of clinical trials referenced in the package leaflets of DOACs presented methodological uncertainties in their trials. It is suggested the need for regulations that establish updates of the information content present in the professional package inserts and establish a description of the methods in a clear and cohesive way (AU).

8. Introduction of Consideration for Students at University of Tsukuba / 医学教育

The University of Tsukuba aims to be a university where all members, not only LGBT but also everyone with diverse personalities, can share their abilities. The Bureau of Human Empowerment plays a central role in student support in line with the Basic Principles and Guidelines on LGBT+ Inclusion at the University of Tsukuba (2020 revision). Students' gender information is accessible only to those who need it, such as teachers in charge. Faculty and staff are encouraged to handle information carefully. While basic knowledge of LGBT and others is necessary, it is also important to consider all students based on the premise that there are those with diverse personalities who are not LGBT, rather than treating LGBT and other students specially. We shared our opinions with faculty and the faculty development (FD) committee members at FD meetings.

Analysis of the chloroplast genome of Incarvillea younghusbandii Sprague / 生物工程学报

Incarvillea younghusbandii Sprague is a traditional tonic herb. The roots are used as herbal medicine for nourishing and strengthening, as well as treating postpartum milk deficiency and weakness. In this study, the chloroplast genome of I. younghusbandii was sequenced and assembled by the high-throughput sequencing technology. The sequence characteristics, sequence repeats, codon usage bias, phylogenetic relationships and estimated divergence time of I. younghusbandii were analyzed. The 159 323 bp sequence contained a large single copy (80 197 bp), a small single copy (9 030 bp) and two inverted repeat sequences (35 048 bp). It contained 120 genes, including 77 protein coding genes, 8 ribosomal RNA genes and 35 transfer RNA genes. AAA was the most frequent codon in the chloroplast coding sequence of I. younghusbandii. A total of 42 simple sequence repeats were identified in the chloroplast genome. Phylogenetic analysis revealed I. younghusbandii was mostly like its taxonomically close relative Incarvillea compacta. The divergence between I. younghusbandii and I. compacta was dated to 4.66 million years ago. This study was significant for the scientific conservation and development of resources related to I. compacta. It also provides a basic genetic resource for the subsequent species identification of the genus Incarvillea, and the population genetic diversity study of Bignoniaceae.

Characteristics and phylogenetic analysis of chloroplast genome of a new type of fruit Rubus rosaefolius / 生物工程学报

The genomic DNA of Rubus rosaefolius was extracted and sequenced by Illumina NovaSeq platform to obtain the complete chloroplast genome sequence, and the sequence characteristics and phylogenetic analysis of chloroplast genes were carried out. The results showed that the complete chloroplast genome of the R. rosaefolius was 155 650 bp in length and had a typical tetrad structure, including two reverse repeats (25 748 bp each), a large copy region (85 443 bp) and a small copy region (18 711 bp). A total of 131 genes were identified in the whole genome of R. rosaefolius chloroplast, including 86 protein coding genes, 37 tRNA genes and 8 rRNA genes. The GC content of the whole genome was 36.9%. The genome of R. rosaefolius chloroplast contains 47 scattered repeats and 72 simple sequence repeating (SSR) loci. The codon preference is leucine codon, and the codon at the end of A/U is preferred. Phylogenetic analysis showed that R. rosaefolius had the closest relationship with R. taiwanicola, followed by R. rubraangustifolius and R. glandulosopunctatus. The chloroplast genome characteristics and phylogenetic analysis of R. rosaefolius provide a theoretical basis for its genetic diversity research and chloroplast development and utilization.

Mediating effect of negative cognitive processing bias in the relationship between pathological narcissism and interpersonal conflict in college students / 中华行为医学与脑科学杂志

Objective:To explore the mediating role of negative cognitive processing bias between pathological narcissism and interpersonal conflict of college students.Methods:The pathological narcissism, negative cognitive processing bias and interpersonal conflict of 540 college students were investigated by the super brief-PNI, negative cognitive processing bias questionnaire and NRI-relationship quality version.Descriptive analysis, correlation analysis and reliability test of the questionnaires were conducted by SPSS 27.0 software.Amos 23.0 software was used for structural equation modeling, and the nonparametric percentile Bootstrap method based on deviation correction was used for intermediary effect test.Results:The scores of pathological narcissism, negative cognitive processing bias and interpersonal conflict were (3.33±0.86), (2.41±0.60) and (2.34±0.77), respectively.Pathological narcissism, negative cognitive processing bias and interpersonal conflict were significantly positively correlated ( r=0.38-0.94, all P<0.01). Negative cognitive processing bias played full mediating role in the relationship between pathological narcissism and interpersonal conflict. The model was well fitted ( χ2/ df=2.63, CFI =0.99, NFI=0.98, IFI=0.99, TLI=0.98, RMSEA=0.05). Path analysis and mediation test showed that pathological narcissism had a significant predictive effect on the total effect of interpersonal conflict among college students ( β=0.52, P<0.001). Pathological narcissism had a significant predictive effect on negative cognitive processing bias ( β=0.64, P<0.001). Negative cognitive processing bias had a significant predictive effect on interpersonal conflict ( β=0.76, P<0.001). Pathological narcissism didn’t predict the direct effect of interpersonal conflict significantly ( β=0.03, P>0.05). Conclusion:Pathological narcissism has a positive predictive effect on interpersonal conflict among college students.Negative cognitive processing bias plays a complete intermediary role between pathological narcissism and interpersonal conflict.

Effect of transference for pain on prosocial tendency in medical students: the moderating role of attentional bias / 中华行为医学与脑科学杂志

Objective:To explore the relationship between medical students' pain empathy response(pain emapthy) and prosocial tendency, and the moderating effect of attentional bias.Methods:In April 2022, 108 medical students were evaluated by the general characteristics survey questionnaire, pain empathy scale (EPS), and prosocial tendencies measure (PTM). The E-Prime dot probe task paradigm experiment procedure was used to evaluate the attentional bias of all participants. SPSS 24.0 was used for descriptive statistics, correlation analysis, stratified regression analysis, and repeated measure ANOVA. PROCESS 3.4.1 was used for moderating effect analysis.Results:(1)The pain transference score of female medical students was significantly lower than that of male(3.46±0.67, 3.95±0.51)( t=3.54, P<0.05). Medical students with chronic pain had significantly lower scores than those without chronic pain(3.28±0.84, 3.66±0.60)( t=-2.35, P<0.05). There was significant difference in prosocial tendency among medical students of different majors( χ2=6.62, P<0.05). (2)There was positive correlation( r=0.39, P<0.001) between their transference for pain(3.59±0.66) and prosocial tendency(3.60±0.50) in medical students. (3)Transference for pain could significantly positively predict prosocial tendency in medical students ( B=0.26, P<0.001). The attention bias of medical students to sadness in pain situation (d pain sadness) played a moderating role between transference for pain and prosocial tendency( B=0.01, P<0.05). Conclusion:The level of medical students’ transference for pain can significantly predict their prosocial tendencies, and improving medical students’ attention to sadness in pain situations is beneficial to exert the effect of transference for pain on prosocial behaviors.

Behavioral inhibition system and social anxiety among college students: multiple mediating effect of mindfulness and negative cognitive bias / 中华行为医学与脑科学杂志

Objective:To explore the role of mindfulness and negative cognitive bias between behavioral inhibition system and social anxiety among college students.Methods:From October 12th to November 8th of 2012, a total of 747 college students from a university in Tianjin were sampled and assessed using the behavioral inhibition system scale (BIS), the mindful attention awareness scale (MAAS), the negative cognitive processing bias questionnaire (NCPBQ), and the social avoidance and distress scale (SAD). Descriptive statistics, correlation analysis, and tests for mediating effects were performed by SPSS 20.0 and Mplus 8.0.Results:The scores of behavioral inhibition system, social anxiety, mindfulness and negative cognitive bias were (15.3±2.4), (12.7±7.2), (3.4±0.8) and (45.6±11.5), respectively. The scores of BIS, NCPBQ, and SAD were positively correlated with each other ( r=0.27-0.49, all P<0.001). The scores of MAAS were negatively correlated with the scores of BIS, NCBPQ, and SAD ( r=-0.33--0.28, all P<0.001). The behavioral inhibition system exerted its influence on social anxiety through three pathways. The mediating effect size of mindfulness was 0.04, accounting for 16.0% of the total effect. The mediating effect size of negative cognitive bias was 0.17, accounting for 68.0% of the total effect. And the chain mediating effect size of mindfulness and negative cognitive bias was 0.04, accounting for 16.0% of the total effect. Conclusion:The effects of behavioral inhibition system on social anxiety in college students are individually mediated by mindfulness and negative cognitive biases, as well as their chain mediating effects.

The influence of embodied emotion priming on the attentional bias of individuals with depression tendency / 中华行为医学与脑科学杂志

Objective:To explore the effects of embodied emotion priming on attentional bias of individuals with depression tendency.Methods:From June to December 2018, a total of 91 college students with depression tendency were recruited to participate in the experiment.A 3(embodied emotion priming: positive priming, negative priming and no priming) × 2 (emotional face: happy and sad) mixed design was adopted to measure the attentional bias of individuals with depression tendency using the dot probe paradigm. SPSS 22.0 statistical software was used for repeated measurement analysis of variance.Results:In terms of attentional bias, the interaction effect between embodied emotion priming types and emotional faces was significant ( F(2, 88)=5.97, P=0.004, ηp2=0.119). Further simple effect analysis showed that, under the happy-face condition, participants' attentional bias reaction time(△RT) was significantly higher when primed with embodied positive emotion than those primed with embodied negative emotion((14.30±18.23)ms, (-6.53±38.17)ms, P<0.05). The participants' attentional bias △RT was significantly lower when primed with embodied negative emotion than participants with no priming ((-6.53±38.17)ms, (9.16±30.62)ms, P<0.05). Under the sad-face condition, the participants' attentional bias △RT was significantly higher when primed with embodied negative emotion((28.22±35.33)ms) than participants primed with embodied positive emotion((11.71±29.24)ms, P<0.05) and no priming ((7.63±30.60)ms, P<0.05). Conclusion:Embodied emotion priming can affect the attentional bias of individuals with depression tendency.

The influence of autistic traits and ambiguous situations on the interpretation bias of senior high school students / 中华行为医学与脑科学杂志

Objective:To explore the changing characteristics of interpretive bias of senior high school students with different levels of autistic traits in ambiguous situations, and to investigate the consistency of interpretive bias across self/other relevant conditions.Methods:A survey of 1 080 senior high school students from a high school in Anhui province was conducted by using the autistic-spectrum quotient (AQ). According to the criteria of high scores and low scores of 27%, the subjects in the high autistic trait group ( n=266) and the low autistic trait group ( n=266) were selected.The ambiguous situation paradigm was used to measure the frequency of positive interpretation of ambiguous information by two groups of subjects under the conditions of self and others, SPSS 26.0 was used for descriptive statistics, and jamovi 2.2.3 was used for generalized linear mixed model analysis. Results:(1) The results of the between-group effects at the level of autistic traits indicated that the frequency of positive interpretations in the high autistic group was significantly lower than that in the low autistic group(54.5(11.8), 57(11.8) )( χ2=13.99, P<0.001). The results of the interaction between level of autistic traits and type of ambiguous situation indicated that in the positive ambiguous situation, the frequency of positive interpretations in the high autistic group was smaller than that in the low autistic group (33(4), 34(3)) ( P<0.001). There was no significant differences in the number of positive interpretations between high autistic group and low autistic group in negtive ambiguous situation( P>0.05). (2) The results of the main effects of the ambiguous situation types indicated that the frequency of positive interpretations in positive ambiguous situations was significantly higher than that in negative ambiguous situations(33(4), 23(9.25)) ( χ2=1 348.50, P<0.001). The results of the interaction between level of autistic traits and type of ambiguous situation indicated that the frequency of positive interpretations in positive ambiguous situations (33(4), 34(3)) in both high and low autistic groups was larger than that in negative ambiguous situations (22(10), 24(9)) ( P<0.001). (3) The main effects results for the self/other related conditions suggested that the frequency of positive interpretations of familiarity with others (19(4)) was significantly higher than that of self-related conditions (19(5)) and strangers (19(5)) ( χ2=9.51, P<0.01), and there was no significant difference between self-related conditions and strangers( P>0.05). The results of the interaction between ambiguous situation type and self/other related conditions suggested that in the positive ambiguous situation, the frequency of positive interpretations of familiarity with other people's conditions was greater than that of self-related conditions( P<0.01), and in the negative ambiguous situations, there was no significant difference in the frequency of positive interpretations related to different self/others( P>0.05). Conclusions:(1) High school students with high and low autistic traits are more inclined to show positive interpretations in the ambiguous situations, and it higher under the condition of positive ambiguous situations and acquaintances.(2) Compared with those with low autistic traits, individuals with high autistic traits tend to give less positive interpretations to ambiguous situations, but this difference is mainly manifested in positive ambiguous situations.(3) In the negative ambiguous situation, there is no significant difference in number of positive interpretations produced by senior high school students with high and low autistic traits, and they are stable across self and other related conditions.

An eye movement study on attention bias to emotional face of depressed college students with alexithymia / 中华行为医学与脑科学杂志

Objective:To explore the characteristics of attentional bias to emotional faces of depressed college students with alexithymia.Methods:Using self-rating depression scale (SDS) and the twenty-item Toronto alexithymia scale(TAS-20), 25 low alexithymic-currently depressed undergraduates (LA-CD group), 33 low alexithymic-non depressed undergraduates(LA-ND group) and 23 high alexithymic-currently depressed undergraduates(HA-CD group) were selected from 885 valid questionnaires.Using eye tracking system, emotional face pictures were selected as stimulus materials, and the relative gaze time(attention bias score) of experimental participants was analyzed by statistical methods such as covariance analysis and adjustment analysis to explore the attentional bias of depressed college students with alexithymia.Results:(1) Under the low level of alexithymia, there was significant difference in attentional bias between college students in depression group (-0.23±0.18) and non-depressed group (0.06±0.11) ( F=55.876, P<0.01). (2) There were significant differences in relative attention bias among LA-CD group (-0.234±0.150), HA-CD group(-0.070±0.153) and LA-ND group (0.064±0.149) ( F(2, 78)=27.685, P<0.01). According to Bonferroni test, compared to the LA-CD group, the HA-CD group and LA-ND group showed less negative attentional bias.(3) The interaction between total SDS score and total TAS-20 score showed significant difference.Alexithymia played a regulatory role between total SDS score and attentional bias( β=0.333, t=3.345, P<0.01). Conclusion:Both the depressed college students with high alexithymia and the non-depressed college students with low alexithymia show less negative attentional bias.Alexithymia plays a regulatory role between depression and attentional bias.

Relationship of college students’ risk perception of COVID-19 and their anxiety and depression: A moderated mediation model / 西安交通大学学报(医学版)

【Objective】 To explore the effects of perceived risk of COVID-19 of college students on their anxiety and depression, as well as the roles of attention to negative information and perceived social support, so as to provide theoretical basis for colleges and universities to formulate corresponding intervention measures. 【Methods】 By the convenience sampling method, totally 1 404 college students from Shaanxi and Henan provinces were investigated online by using General Information Questionnaire, Perceived Risk of COVID-19 Pandemic Scale, Attention to Negative Information Scale, Patient Health Questionnaire, Generalized Anxiety Disorder and Perceived Social Support Scale. SPSS 20.0 was used for data analysis, Pearson correlation method was used to explore the correlation between variables. The mediating effect of attention to negative information and the moderating effect of perceived social support were analyzed by PROCESS. 【Results】 The scores of anxiety and depression of the 1 404 college students included in the study were 4.03±4.48 and 6.21±5.41, respectively. The detection rate of anxiety symptom was 29.9%, and that of depression symptom was 44.4%. The risk perception of COVID-19 epidemic of the college students was positively correlated with attention to negative information (r=0.373, P<0.001), anxiety (r=0.227, P<0.001), and depression (r=0.226, P<0.001). Anxiety (r=0.553, P<0.001) and depression (r=0.497, P<0.001) were positively correlated with attention to negative information, while perceived social support was negatively correlated with the risk perception of the COVID-19 (r=-0.154, P<0.001), attention to negative information (r=-0.259, P<0.001), anxiety (r=-0.321, P<0.001) and depression (r=-0.278, P<0.001). The risk perception of COVID-19 affected the anxiety and depression of the students mainly through the mediating effect of attention to negative information. The total effect of risk perception of COVID-19 and anxiety was 0.227, and the mediating effect accounted for 80.18% of the total effect. The total effect of risk perception of COVID-19 and depression was 0.228, and the mediating effect accounted for 90.35% of the total effect. Perceived social support played a moderating role in the last half of this mediating model. 【Conclusion】 Risk perception of COVID-19 indirectly affects the occurrence of anxiety and depression in college students through attention to negative information, and perceived social support plays a moderating role in this mediating model. The findings suggest that when a risk event occurs, colleges and universities should pay attention to guiding students to adjust their attentional bias to external information, and give students enough care and support to improve their mental health.