Reliability of dynamic and isometric upper muscle strength testing in breast cancer survivors.

Breast cancer is the most common cancer in women worldwide, and its treatment usually involves a combination of many medical procedures, including surgery, chemotherapy, radiotherapy, and hormonal therapy. One of the detrimental effects on physical function is reduced upper limb muscle strength. This study aimed to evaluate upper body strength intra-day and inter-day (test-retest) reliability using the handgrip strength test (HGS) and the bilateral isometric bench press (BIBP) and the test-retest reliability of the one repetition maximum on the bench press (BP-1RM) in breast cancer survivors (BCS). Thirty-two (52.94 ± 8.99 yrs) BCS participated in this study. The muscle strength tests were performed in two different moments, three to seven days apart. Intraclass coefficient correlation (ICC) and coefficient of variation (CV) were used to assess the reliability. Standard error of measurement (SEM), typical error of measurement (TEM), and minimally detectable change (MDC) analyses were performed. The Bland-Altman analysis was used to assess the agreement between test-retest. We found a reliability that can be described as "high" to "very high" (ICC ≥ 0.88; CV ≤ 10%) for intra-day and test-retest. SEM% and MDC% were lower than 5% and 11%, respectively, for all intra-day testing. SEM% and TEM% ranged from 3% to 11%, and MDC% ranged from 9% to 23% in the test-retest reliability. The agreement demonstrated a systematic bias ranging from 2.3% to 6.0% for all testing, and a lower systematic bias may be presented in the non-treated side assessed by HGS and BIBP. HGS, BIBP, and BP-1RM assessments are reliable for measuring upper-body muscle strength in BCS.

A comprehensive assessment of quality management methods in the SMESH study.

BACKGROUND: This paper aims to instigate discussion and publication of methodologies applied to enhance quality management through comprehensive scientific reports. It provides a detailed description of the design, implementation, and results of the quality control program employed in the SMESH study. METHODS: Cross-sectional, multicenter, national study designed to assess the prevalence of human papillomavirus in sex workers and in men who have sex with men (MSM). Respondent-driven sampling recruitment was used. An online system was developed for the study and checkpoints were defined for data entry. The system checked the quality of biological samples and performed a retest with part of the sample. RESULTS: A total of 1.598 participants (442 sex workers and 1.156 MSM) were included. Fifty-four health professionals were trained for face-to-face data collection. The retest showed Kappa values ranging between 0.3030 and 0.7663. CONCLUSION: The retest data were mostly classified as indicating a strong association. The data generated by the checkpoints showed the successful implementation of the quality control program.

Reactive strength index-modified: reliability, between group comparison, and relationship between its associated variables.

To investigate and compare the reliability of reactive strength index-modified (RSImod) and its associated variables (jump height [JH] and [time to take-off]) 20 combat fighters and 18 physically active men participated in this study. They visited the laboratory three times; firstly, for jump familiarization and two sessions for test-retest (2-7 days apart). For both groups, the between-day changes in performance were trivial to small (≤ 1.1%). The coefficient of variation (CV) comparisons (i.e. CV ratio) demonstrated that combat athletes had a lower test-retest variation for RSImod (0.87) and JH (0.80) than non-athletes. Combat athletes demonstrated a greater JH than physically active men (0.43 vs 0.37; p = 0.03, g = 0.73), but small and non-significant differences were observed for RSImod (0.60 vs 0.55; p = 0.24, g = 0.38) and TTT (0.70 vs 0.72; p = 0.32, g = 0.33). RSImod was more positively correlated with JH (r = 0.75-0.87; p < 0.001) than negatively correlated with TTT (r = 0.45-0.54; p < 0.001). This study suggests that RSImod is a reliable variable obtained during CMJ testing in combat athletes and physically active men, with scores being slightly better for combat athletes. In terms of performance, combat athletes jumped higher than physically active men, but no differences in RSImod or TTT were observed. Lastly, RSImod was more strongly related to JH than TTT, and this was more evident in athletes than nonathletes. This indicates that the combat athletes were able to better utilize their (equal) time spent jumping (higher), possibly via greater utilization of the stretch shortening cycle, faster or more optimal motor unit recruitment, or an array of other factors.

Geração de itens e validação de conteúdo de domínios e de itens para o indivíduo com osteoartrite do joelho: um estudo de método misto / Item generation and content validation of domains with item pool for the individual with knee osteoarthritis: a mixed-method study

INTRODUÇÃO: Existem várias escalas para avaliar as percepções subjetivas e os componentes individuais em indivíduos com osteoartrite (OA) de joelho. Até o momento, não há escalas disponíveis conhecidas para medir o equilíbrio combinado entre mobilidade, AVD e QV em OA de joelho com base na Classificação Internacional de Funcionalidade, Incapacidade e Saúde (CIF). OBJETIVO: Gerar itens e domínios relacionados aos problemas enfrentados pelos indivíduos com OA de joelhos e validar o conteúdo por especialistas. MÉTODOS: Os domínios e itens foram gerados através de pesquisa bibliográfica extensa (ELS) para extrair itens relacionados a equilíbrio, mobilidade, ADL e QV em indivíduos com OA em joelhos baseados na CIF e através de entrevista aprofundada direta (EAD) em 13 pessoas com OA de joelhos e três especialistas. A validação de conteúdo dos domínios e itens gerados foi validada por 10 especialistas por meio da pesquisa Delphi online. O índice mínimo de validação de conteúdo em nível de item (I-CVI) de 0,80 foi considerado para validar os itens identificados e o índice de validação de conteúdo em nível de escala geral (S-CVI) de 0,90 foi fixado para validar os itens gerados para uso no processo de desenvolvimento da escala. RESULTADOS: Os 117 itens gerados por EAD na ELS foram inicialmente agrupados em 18 domínios. A validação de conteúdo pelo método Delphi resultou em uma diminuição para 56 itens agrupados em 14 domínios com SCVI de 0, 93. CONCLUSÃO: O conjunto abrangente de itens de deficiência, limitação de atividade e restrição de participação para indivíduos com OA de joelhos nos domínios propostos foi desenvolvido e o conteúdo validado. Esses itens são recomendados para uso no desenvolvimento de uma nova escala abrangente de índice de osteoartrite do joelho (CKOAI).

INTRODUCTION: There are several scales to evaluate subjective perceptions and individual components in individuals with knee osteoarthritis (IKOA). Till date, no scale is available to measure the combined balance, mobility, ADL and QoL in IKOA based on the International Classification of Functioning, Disability and Health (ICF). OBJECTIVE: The purpose of the study was to generate items and domains related to problems faced by IKOA and to validate the content by experts. METHODS: The domains and items were generated through extensive literature search (ELS) to extract items related to symptoms, balance, mobility, ADL and QoL in IKOA based on the International Classification of Functioning, Disability and Health (ICF) and through in-depth direct interview (IDDI) from 13 IKOA and three experts. The content validation of domains and items generated were validated by 10 experts through online Delphi survey. Minimum itemlevel content validation index (I-CVI) of 0.80 was considered to validate the identified items and the overall scale-level content validation index (S-CVI) of 0.90 was fixed to validate the generated items to use in scale development process. RESULTS: 117 items generated by IDDI and ELS were grouped under 18 domains initially. Content validation by Delphi method resulted in reduction with 56 item pool being grouped under the 14 domains with SCVI is 0.93. CONCLUSION: The comprehensive impairment, activity limitation and participation restriction item pool for IKOA under the proposed domains, have been developed and content validated. These items are recommended for their use in development of new comprehensive knee osteoarthritis index scale (CKOAI).

Cross-cultural adaptation to Brazilian Portuguese and assessment of the measurement properties of the Questionnaire for Urinary Incontinence Diagnosis (QUID).

OBJECTIVE: This study aimed to adapt the Questionnaire for Urinary Incontinence Diagnosis (QUID) into Brazilian Portuguese (QUID-Br) and evaluate its measurement properties, given as reliability, validity, and responsiveness in women with urinary incontinence. STUDY DESIGN: It was a methodological study which enrolled 168 women (mean age = 55.1, standard deviation = 17.9 years old). Translation and cross-cultural adaptation were done and subsequently analysis of the measurement properties of QUID-Br were tested: structural validity (by exploratory and confirmatory factory analysis) internal consistency (Cronbach's α) construct validity (Pearson Correlation), and test-retest reliability (Intraclass Correlation Coefficient). RESULTS: The QUID-Br two-factor was confirmed showing two domains with three items each: stress urinary incontinence (SUI) and urge urinary incontinence (UUI). Furthermore, QUID-Br showed acceptable internal consistency for both scales (Cronbach's α > 0.70), reliability [intraclass correlation coefficient (ICC = 0.85 for SUI and 0.87 for UUI)] with 95 % confidence interval (CI) and construct validity - with all the hypothesis raised a priori being confirmed. CONCLUSIONS: The results of the present investigation showed that the QUID-Br is a valid, reliable, and consistent instrument to be administered to Brazilian women and its use is recommended in clinical practice and research.

Psychometric properties and diagnostic utility of a Brazilian version of the PCL-5 (complete and abbreviated versions).

Background: With the release of the fifth edition of the Diagnostic and Statistical Manual for Mental Disorders (DSM-5), the Posttraumatic Stress Disorder Checklist (PCL) has been updated to meet the revisions of the diagnostic criteria for Posttraumatic Stress Disorder (PTSD). However, the diagnostic utility and reliability of a Brazilian version of the new Posttraumatic Stress Disorder Checklist (PCL-5) have not been investigated yet. Objective: To investigate the internal consistency, test-retest reliability, and diagnostic utility of the complete version (21-item) and two abbreviated (8-item and 4-item) versions of the Brazilian PCL-5. Methods: A total of 85 individuals with a history of exposure to at least one traumatic event underwent a diagnostic interview using the Structured Clinical Interview for DSM-5 (SCID-5-CV) and completed the Brazilian version of the PCL-5. Moreover, participants were invited to complete the checklist for a second time 10-30 days after the first assessment. Results: Both the complete and abbreviated versions of the Brazilian PCL-5 showed good internal consistency (complete PCL-5, α = .96; 8-item, α = .93; 4-item, α = .85) and test-retest reliability (complete PCL-5, ICC .87 [95% CI, 0.65-0.95]; 8-item, ICC .84 [95% CI, 0.60-0.94]; 4-item, ICC .84 [95% CI, 0.58-0.94]). Diagnostic utility analyses using the Structured Clinical Interview for DSM-5 (SCID-5-CV) revealed that a cutoff point of 36 presented the higher overall efficiency for predicting a PTSD diagnosis Overall Efficiency (OE, .80) and corresponded to Youden's index J (.65). For the 8-item version, a cutoff point of 13 corresponded to Youden's index J (.61), while scores of 21 or more were associated with the highest OE (.78). For the 4-item PCL-5, scores > 7 presented the highest OE (.77) and corresponded to Youden's index J (.59). Conclusions: Overall, the findings provide relevant evidence regarding the high reliability and diagnostic utility of this Brazilian version of the PCL-5.

Antecedentes: con la publicación de la quinta edición del Manual de Diagnóstico y Estadístico para los Trastornos Mentales (DSM-5), el Cuestionario para el Trastorno de Estrés Postraumático (PCL) se ha actualizado para cumplir con las revisiones de los criterios de diagnósticos del trastorno de estrés postraumático (TEPT). Sin embargo, la utilidad diagnóstica y la confiabilidad de una versión brasileña del nuevo cuestionario de trastorno de estrés postraumático (PCL-5) aún no se ha investigado.Objetivo: investigar la consistencia interna, la confiabilidad test-retest y la utilidad diagnóstica de la versión completa (21 ítems) y dos versiones abreviadas (8 y 4 ítems) del PCL-5 brasileño.Métodos: Un total de 85 individuos con antecedentes de exposición, al menos, a un evento traumático se sometieron a una entrevista diagnóstica utilizando la entrevista clínica estructurada para el DSM-5 (SCID-5-CV) y completaron la versión brasileña del PCL-5. Además, los participantes fueron invitados a completar el cuestionario por segunda vez entre 10 y 30 días después de la primera evaluación.Resultados: Tanto la versión completa como las abreviadas de la PCL-5 brasileña mostraron una buena consistencia interna (PCL-5 completa, α = .96; 8 ítem, α = .93; 4-item, α = .85) y confiabilidad test-retest (PCL-5 completa, ICC .87 [IC 95%, .65 - .95]; 8 ítems, ICC .84 [IC 95%, 0.60 - 0.94]; 4 ítems, ICC .84 [IC 95%, 0.58] - 0,94]). Los análisis de utilidad diagnóstica que utilizaron el SCID-5-CV revelaron que un punto de corte de 36 presentó la mayor eficiencia general para predecir un diagnóstico de TEPT (OE, .80) y correspondió al índice J de Youden (.65). Para la versión de 8 ítems, un punto de corte de 13 correspondió al índice J de Youden (.61), mientras que las puntuaciones de 21 o más se asociaron con el OE más alto (.78). Para el PCL-5 de 4 ítems, los puntajes> 7 presentaron el OE más alto (.77) y correspondieron al índice J de Youden (.59).Conclusiones: En conjunto, los hallazgos proporcionan evidencia relevante con respecto a la alta confiabilidad y utilidad diagnóstica de esta versión brasileña del PCL-5.

Reliability of Cardiorespiratory and Metabolic Responses During Incremental Shuttle Walk Test in Adult Subjects With Asthma.

BACKGROUND: The incremental shuttle walk test (ISWT) has been widely used to assess exercise capacity of subjects with COPD. However, to date, no studies have assessed its reliability in the asthmatic population. This study aimed to assess the test-retest reliability of ISWT for the distance walked (ISWD) and cardiorespiratory and metabolic responses in adult subjects with asthma. METHODS: This was a cross-sectional observational study. Thirty-four subjects of both genders, 18-45 y old, with a diagnosis of controlled asthma, were recruited from March 2012 to December 2015. The subjects performed 3 ISWTs on different days, with a minimum interval of 48 h and a maximum of 1 week between the second and third ISWT. For the reliability analysis, the values of the second and third ISWTs were used, eliminating the influence of any learning effect from the first test. RESULTS: The intraclass correlation coefficients were > 0.75 (P < .001) for ISWD (m), speed (km/h),oxygen uptake (V̇O2 ), ventilatory equivalent carbon dioxide (V̇E/V̇CO2 ), and minute ventilation (V̇E) at the ISWT peak. The Bland-Altman plot presented a mean error close to zero, and measurement distribution was within acceptable limits of variation. CONCLUSION: The ISWT presented excellent reliability for the ISWD and metabolic responses. The cardiorespiratory responses in the ISWTs presented good reliability. We concluded that the ISWT was reliable for young adult subjects with controlled asthma.

Impact of heart rate on reproducibility of heart rate variability analysis in the supine and standing positions in healthy men

OBJECTIVE: The reliability of heart rate variability (HRV) analysis is not yet fully understood, especially considering different body positions and the mathematical influence of heart rate. The aim of this study was to evaluate the reliability of HRV in supine and standing positions, with and without mathematical adjustment of HRV by the average R-R interval (iRR). METHODS: We evaluated 37 young males (23.1±4 years; 25.1±3 kg/m2). A 5-min segment of the iRR was collected in the supine and standing positions on three occasions separated by 48-hour intervals. Absolute and relative reliability of temporal and spectral indices were assessed by the coefficient of variation (CV) and the intraclass correlation coefficient (ICC), respectively. RESULTS: We did not observe differences in HRV indices in the three occasions in the supine or standing position (p>0.05). Moderate to good reproducibility was observed for temporal and spectral indices of HRV in the supine position (ICC: 0.65-0.89; CV: 0.9-19.8). In the orthostatic position, low to good reproducibility was observed (ICC: 0.35-0.89; CV: 1.1-34.8), with higher ICCs for temporal indices. After mathematical adjustment, only a small modification in HRV reliability was observed in both positions. CONCLUSIONS: In young adult males, the mathematical adjustment of HRV by the average iRR led to a nonsignificant effect on HRV reliability. Additionally, HRV reliability is dependent on body position and the index analyzed. Promising measures in both supine and standing positions include r-MSSD and the HF band (parasympathetic indices).

Reliability and Internal Consistency of the Spanish Version for Colombia of the Western Ontario Rotator Cuff Index (WORC) / Confiabilidad y consistencia interna de la versión en español para Colombia del Índice de Western Ontario para Manguito Rotador (WORC)

Introducción: el índice de Western Ontario para Manguito Rotador (WORC) evalúa la calidad de vida en pacientes con patología del manguito rotador El objetivo de este estudio fue traducir la escala al español y evaluar su consistencia interna y reproducibilidad en pacientes con esta enfermedad. Métodos: siguiendo las guías de la literatura, se tradujo la escala de WORC y se aplicó a sesenta pacientes con patología del manguito rotador Para evaluar la confiabilidad, los pacientes debían responder la escala por segunda vez, en un período no mayor a 14 días. Se calcularon el alfa de Cronbach y el coeficiente de correlación intraclase (ICC) para determinar la confiabilidad test-retest y la consistencia interna. El gráfico de Bland-Altman y el índice de cambio confiable (RCI) se usaron para calcular el error de medición. Resultados: el alfa de Cronbach fue 0,96 para el valor total del WORC (rango de 0,85-0,94 para los cinco dominios). La confiabilidad test-retest fue excelente con un ICC de 0,98 (rango de 0,91-0,97 para los dominios). El gráfico de Bland-Altman no demostró diferencias sistemáticas y el RCI fue 7,6%. Conclusión: la versión en español de la escala de WORC es una herramienta válida y confiable para evaluar calidad de vida en pacientes con patología del manguito rotador y puede utilizarse en países de habla hispana como Colombia. Nivel de evidencia: estudio de ciencias básicas, desarrollo o validación de instrumentos para medición de desenlaces.

Background: The Western Ontario Rotator Cuff Index (WORC) is an assessment tool developed to evalúate quality of Iife in patients with rotator cuff disease (RCD). The purpose of this study' is to transíate the WORC índex into Spanish and to evalúate its reproducibility and internal consistency' in patients with RCD. Methods: Followingguidelines fforn literature, the WORC Índex was translated. Sixty patients with RCD were asked to complete the questionnaire. To evalúate reliability, they were asked to answer it for a second time within the next 14 days. The Cronbach's a (CA) and the intraclass correlation coefficient (ICC) were calculated to determine test-retest reliability and internal consistency Bland-Altman plot and reliable change Índex (RCI) were used to evalúate measurement error. Results: Cronbach's a was 0.96 for the total WORC score (ranges 0.85-0.94 for the five domains). Excellent test-retest reliability' was seen with an ICC of 0.98, with the domains ranging between 0.91-0.97. The Bland-Altman plot showed no sy'stematic differences, and the RCI for the total WORC Índex was 7.6%. Conclusión: The Spanish versión of the WORC Índex is a valid and reliable tool for evaluating quality' of Iife in patients with RCD and may be used in Spanish speaking countries like Colombia. Level of evidence: Basic Science Study, Development or Validation of Outcomes Instruments/Classification Systems.

Confiabilidade teste-reteste do instrumento EORTC QLQ FA13 para avaliação de fadiga em pacientes oncológicos / Test-retest reliability of EORTC QLQ FA 13 instrument for fatigue assessment in oncological patients

Resumo Objetivo Verificar a estabilidade teste-reteste do instrumento EORTC QLQ FA13 na versão em português do Brasil por meio do processo de equivalência semântica, compreendendo a fase de equivalência de mensuração que abrange os estudos psicométricos. Métodos O instrumento foi aplicado em 163 pacientes nas enfermarias clínicas e cirúrgicas de um hospital de alta complexidade no tratamento do câncer situado no município do Rio de Janeiro entre março de 2015 e outubro de 2016, através de um questionário aplicado por entrevista individual. Para testar a adequação do processo de aferição, solicitou-se que respondessem novamente o questionário, com intervalo de 7 a 15 dias. Resultados Dentre aqueles que participaram do teste, 50 (30,67%) aderiram também ao reteste. Houve boa compreensão do instrumento na etapa de teste. As respostas mostraram-se estáveis, e as estimativas de confiabilidade teste-resteste variaram de boa a excelente (kappa = 0,66 a 0,80), seja para os itens, seja para as dimensões da escala. Conclusão O presente estudo, juntamente com outras etapas prévias de confiabilidade do instrumento, sugere alta estabilidade das informações coletadas, o que torna real sua aplicabilidade na população brasileira visando à melhora da qualidade da assistência dos pacientes oncológicos.

Abstract Objective To verify the test-retest stability of the EORTC QLQ FA 13 instrument in the Brazilian Portuguese version through the semantic equivalence process, including the equivalence phase of measurement that covers psychometric studies. Methods The instrument was applied in 163 patients undergoing cancer treatment in the clinical and surgical infirmaries of a highly complex hospitallocated in the city of Rio de Janeiro between March 2015 and October 2016 through a questionnaire applied in an individual interview. In order to test the suitability of the measurement process, participants were requested to answer the questionnaire a second time after and interval of 7 to 15 days. Results Among participantsed, 50 (30.67%) also adhered to retest. There was good understanding of the instrument at the test stage. The responses were stable, and the estimates of test-retest reliability varied from good to excellent (kappa = 0.66 to 0.80), either for items or for scale dimensions. Conclusion The present study and other previous steps of reliability of the instrument suggest a high stability of the information collected, which makes its applicability in the Brazilian population useful for improving the quality of care of cancer patients.

Propiedades psieométrieas del Stroop, test de colores y palabras en población colombiana no patológica / Psychometric Properties of the Stroop color-word Test in non-pathological Colombian Population

El objetivo del presente artículo es revisar las propiedades psieométrieas del Stroop, test de colores y palabras de Golden (2007) en población colombiana no clínica. 1332 participantes, 561 varones (42.1%) y 771 mujeres (57.9%) entre 7 y 80 años de edad, (M= 29.80 DE= 17.95). agrupados en los rangos de edad de 16 a 44 años (48.5%), 7 a 15 (28.1%), 45 a 64 (18.1%) y 65 a 80 (5.2 %). La confiabilidad fue evaluada utilizando test-retest a través del coeficiente de correlación intraclase con IC al 95% con diferencia de diez minutos entre las dos aplicaciones. La validez de constructo fue medida mediante el Análisis de componentes principales ACP La validez convergente fue calculada a través de r de Pearson entre las subescalas de Stroop y el TMT-B. El Análisis paralelo de horn y el ACP arrojaron evidencia de tres componentes que explican el 86.84% de la varianza. Las correlaciones r de Pearson, el Stroop y TMT-B fueron significativas a 0.01 con valores de -0.41 para P; -0.35 para C; de -0.40 para PC, y de -0.14 para interferencia. La confiabilidad encontrada fue superior a 0.70 en todas las láminas del Stroop. La validez discriminante no halló diferencias entre hombres y mujeres, pero si para edad, estrato y escolaridad. Las medias y desviaciones estándar en la población colombiana fueron inferiores en todas las escalas a la versión española, lo que puede ser explicado por diferencias culturales importantes. Los resultados permiten afirmar que el Stroop es válido y confiable para diversos grupos etarios de poblaciones no patológicas en Colombia.

The aim of this article is to review the psychometric properties of the Stroop Color and Word Test Golden (2007) in Colombian nonclinical population. 1,332 participants, 561 males (42.1%) and 771 women (57.9%) between 7 and 80 years old, (M = 29.80 SD = 17.95) grouped into age ranges of 16-44 years (48.5%), 7-15 (28.1%), 45-64 (18.1%) and 65-80 (5.2%). Reliability was assessed using test-retest through intraclass correlation coefficient with IC95% far ten minutes between the two applications. Construct validity was measured by Principal Component Analysis ACP Convergent validity was calculated by Pearson r between Stroop subscales and TMT-B. Parallel analysis of Horn and gave evidence ACP three components explaining 86.84% of the variance. Pearson r correlations Stroop and TMT-B were significant at 0.01 to -0.41 values for P; -0.35 for C; from -0.40 to -0.14 for PC and Interference. Reliability found was higher than 0.70 in all Stroop scales. Discriminant validity found no difference between men and women, but if for age stratum and schooling. Means and standard deviations were lower Colombian population at all scales to the Spanish version, which can be explained by significant cultural differences. These results support the Stroop is valid and reliable for different age groups of no pathological populations in Colombia.

Propiedades psicométricas del Multidimensional Body Self Relations Questionnaire (MBSRQ) / Psychometric properties of the Multidimensional Body Self Relations Questionnaire (MBSRQ)

La imagen corporal es considerada un constructo multidimensional que implica tres principales componentes: perceptual, subjetivo y conductual. El Multidimensional Body Self Relations Questionnaire (MBSRQ) es considerado como la medida más completa de evaluación de la imagen corporal, el cual consta de 69 ítems agrupados en 10 sub-escalas que miden evaluación y orientación de las apariencia. En población mexicana existen pocos instrumentos que evalúen imagen corporal en hombres, por lo tanto el objetivo del presente estudio fue obtener las propiedades psicométricas del MBSRQ en población masculina. La muestra estuvo conformada por 232 participantes de sexo masculino de nivel licenciatura provenientes de una institución pública del área metropolitana de la ciudad de México, con una edad promedio de 20.59 años (DE =2.65). El análisis de confiabilidad obtenido fue, en el test (α=.88) y en el re-test (α=.86). La correlación test-retest fue de r=.85. Se obtuvieron diez factores que explicaron el 64.48% de la varianza total, con alfas de .55 a .93. Los resultados muestran que el MBSRQ en hombres es un instrumento útil para la evaluación multidimensional de la imagen corporal debido a su estructura factorial, consistencia interna y fiabilidad test retest.

Body image is considered a multidimensional construct that involves three main components: perceptual, subjective and behavioral. The Multidimensional Body Self Relations Questionnaire (MBSRQ) is considered the most comprehensive measure for assessing body image. The MBSRQ is a self-report inventory, which comprises 69 items grouped into 10 sub-scales that measure evaluation and orientation appearance. Only a few instruments in Mexican population exist that asses in a multidimensional way male body image The aim of this study was to obtain the psychometric properties of MBSRQ in male population. The sample was composed of 232 college male participants of a Public institution of Mexico City Metropolitan Area with an average age of 20.59 years (SD=2.65). Reliability analysis was obtained, at the test (α=.88) and re-test (α=.86). The test-retest correlation was r=.85. Ten factors were obtained, that explained 64.48%, of the total variance, with alphas of .55 to .93. The results show that the MBSRQ is a useful instrument in male population for multidimensional assessment of body image in men because of its factorial structure and excellent internal consistency and test retest reliability.

Validity and reliability of the Severity of Dependence Scale (SDS) in a Brazilian sample of drug users.

The Severity of Dependence Scale (SDS) is a short, five-item scale which provides a measure of degree of dependence upon different drugs. The present study explores the validity and reliability of a Portuguese version of the instrument with a sample of 374 Brazilian drug users. Concurrent validity of the SDS was assessed in relation to reported quantity of drugs used and to DSM-IV dependence items, and test-retest reliability was assessed with a subsample of 42 subjects. The SDS total scores for powder cocaine, crack cocaine, cannabis and alcohol were significantly and highly positively correlated with severity of dependence as measured by DSM-IV, and with the estimated quantity of drugs used in the last month. Test-retest coefficients were high for all drugs studied. Principal components analysis showed that the SDS scores lie on a single dimension with the exception of crack cocaine where scores lie on a single dimension for treatment attenders and on two dimensions for community samples. The results indicate that the Portuguese version of the SDS is a valid research tool for measuring severity of dependence upon powder cocaine (snorted), crack cocaine (smoked), cannabis and alcohol.