Mortalidad y factores asociados en pacientes cubanos infectados con VIH-1

Objetivo: Determinar las principales causas de muerte y los factores asociados en los pacientes infectados con el VIH ingresados en el hospital del Instituto de Medicina Tropical "Pedro Kourí" durante los años 2017-2018. Métodos: Se realizó un estudio retrospectivo de casos y controles para determinar las causas de la muerte y algunos factores asociados a ella, en el hospital del Instituto de Medicina Tropical "Pedro Kourí", en el período 2017-2018. Para determinar estos factores se utilizó un análisis multivariado basado en un modelo de regresión logística binaria. Resultados: Las causas de muerte más frecuentes fueron las asociadas al SIDA, fundamentalmente las infecciones oportunistas del sistema respiratorio (41,4%), seguidas por las neoplasias no asociadas al SIDA (25,1%). Los factores que mayor influencia tuvieron sobre la mortalidad fueron la presencia de enfermedad oportunista (OR 14,07 p<0,001) y de neoplasias no asociadas al SIDA (OR 6,76 p=0,005), la alteración de las funciones renal (3,54 p=0,019) y hepática (OR 2,90 p=0,054) y tener mayor carga viral (OR 1,50 p=0,001) y menos tiempo de diagnóstico al momento del ingreso (OR 0,793 p<0,001). El modelo matemático resultante del análisis permitió identificar los principales factores asociados a la mortalidad y explicar su relación con la misma. Conclusiones: Las enfermedades asociadas al SIDA, principalmente las infecciones oportunistas del sistema respiratorio, seguidas por las neoplasias no asociadas al SIDA fueron las causas predominantes de muerte en los pacientes infectados con el VIH que fallecieron en el Instituto de Medicina Tropical "Pedro Kourí" durante el período de estudio. La presencia de neoplasias no asociadas al SIDA, de enfermedades oportunistas, de alteraciones de las funciones renal y hepática, el aumento de la carga viral y el tener menos años de diagnóstico al momento del ingreso, fueron los factores que más contribuyeron a la mortalidad en los pacientes ingresados e infectados con el VIH. El modelo matemático resultante se ajustó bien a los datos y explicó de manera consistente los factores asociados a la mortalidad.

Aim: To determine the main causes of death and associated factors in HIV-infected patients admitted to the Tropical Medicine Institute "Pedro Kourí" hospital during the years 2017-2018. Methods: A retrospective case-control study was carried out to determine the causes of death and some factors associated with it, in the Tropical Medicine Institute "Pedro Kourí" hospital, in the period 2017-2018. To determine these factors, a multivariate analysis based on a binary logistic regression model was used. Results: The most frequent causes of death were those associated with AIDS, mainly opportunistic infections of the respiratory system (41.4%), followed by neoplasms not associated with AIDS (25.1%). The factors that had the greatest influence on mortality were the presence of opportunistic disease (OR 14.07 p <0.001) and neoplasms not associated with AIDS (OR 6.76 p = 0.005), alteration of renal functions (3, 54 p = 0.019) and liver (OR 2.90 p = 0.054) and have a higher viral load (OR 1.50 p = 0.001) and less time to diagnosis at admission (OR 0.793 p <0.001). The mathematical model resulting from the analysis made it possible to identify the main factors associated with mortality and explain their relationship with it. Conclusions: AIDS-associated diseases, mainly opportunistic infections of the respiratory system, followed by non-AIDS-associated neoplasms were the predominant causes of death in HIV-infected patients who died in the Tropical Medicine Institute "Pedro Kourí" during the study period. The presence of neoplasms not associated with AIDS, opportunistic diseases, alterations in kidney and liver functions, increased viral load and having fewer years of diagnosis at the time of admission, were the factors that most contributed to mortality in patients admitted and infected with HIV. The resulting mathematical model fitted the data well and consistently explained the factors associated with mortality.

Influencia de factores de riesgo en la predicción de un evento cardiovascular adverso en población adulta de prevención primaria en El Salvador / Influence of risk factors in the prediction of an adverse cardiovascular event in the adult population of primary prevention in El Salvador

Resumen En la región latinoamericana son escasos los modelos de predicción que permitan conocer cuáles factores de riesgo son más prevalentes y los pocos estudios disponibles no funcionan bien en esta población. Objetivo: Determinar la probabilidad y predicción que tiene los factores de riesgo de sexo, edad, presión arterial sistólica (PAS), índice de masa corporal (IMC), diabetes mellitus y tabaquismo sobre la aparición de un evento cardiovascular adverso (ECA) de una población salvadoreña. Metodología: Estudio de casos y controles de tipo retrospectivo y predictivo. Participaron 527 personas adultas que acudieron a consulta externa de cardiología sin eventos cardiovasculares previos registrados. Se utilizó la prueba de la ji al cuadrado (X2) y V de Cramer para hacer la comparación de frecuencias y la regresión logística binaria para determinar la predicción y las probabilidades estimadas de presentar un ECA en un periodo de cinco años. Resultados: Se encontró una correlación significativamente baja entre los ECA y el sexo (rΦ= -.164; p < .001), diabetes (rΦ=-.244; p < .001) y con el fumando (rΦ= -.159; p < .001). Además, un efecto moderado con la estratificación de riesgo (V de Cramer= .359; p < .001). Existe una predicción significativa (X2= 82.1; p < .001), la cual responde el 32,6 % del modelo. Conclusiones: Las variables de sexo, la edad, la presencia de diabetes mellitus y el fumado predicen la aparición de un ECA en un periodo de cinco años, mientras que el IMC y PAS no influyen significativamente en la probabilidad de padecer de un ECA.

Abstract Influence of risk factors in the prediction of an adverse cardiovascular event in the adult population of primary prevention in El Salvador In the Latin American region, there are few prediction models that allow us to know which risk factors are more prevalent and the few available studies do not work well in this population. Purpose: Determine the probability and prediction that the risk factors of sex, age, systolic blood pressure (SBP), body mass index (BMI), diabetes mellitus and smoking have on the appearance of an adverse cardiovascular event (ACE) in a Salvadoran population. Methods: Retrospective and predictive case-control study. A total of 527 adults participated in the outpatient cardiology consultation with no prior recorded cardiovascular events. Chi Square (X2) and Cramer's V were used to compare frequencies and binary logistic regression to determine the prediction and estimated probabilities of presenting an ACE in a period of 5 years. Results: A significantly low correlation was found between ACEs and sex (rΦ= -.164; p <.001), diabetes (rΦ= -.244; p <.001) and with smoking (rΦ= -.159; p <.001). Also, a moderate effect with risk stratification (Cramer's V = .359; p <.001). There is a significant prediction (X2 = 82.1; p <.001), which responds to 32.6% of the model. Conclusion: The variables of sex, age, the presence of diabetes mellitus and smoking predict the appearance of an RCT in a period of 5 years, while BMI and SBP do not significantly influence the probability of suffering from an ACE.

Logistic regression analysis on influencing factors of health cognition in patients after percutaneous coronary intervention / 公共卫生与预防医学

Objective To investigate the status of health knowledge of patients after percutaneous coronary intervention (PCI) and its influencing factors, so as to provide a scientific basis for formulating targeted health education programs. Methods Using a self-designed questionnaire on health cognition after PCI, 433 patients with a history of PCI surgery at a Grade III, Class A hospital between January 2019 and December 2019 were selected as the research subjects to investigate their health cognition and the influencing factors by binary logistic regression analysis. Results The pass rate of health cognition of patients after PCI was 39%, and the total correct rate was 57.5%. The correct rate of drug knowledge and risk factors was the lowest (33.6% and 48.5%, respectively). Binary logistic regression showed that gender, age and cardiac function classification were risk factors for health cognition of patients after PCI, while education level, occupation category and recurrence of discomfort after PCI were protective factors. Conclusion The level of health cognition of patients after PCI is low. Gender, age, education level, occupation category, cardiac function classification and recurrence of discomfort after PCI are independent influencing factors. When implementing health education, medical staff should comprehensively consider the formulation of individualized health education to help.

Assessment of atrial fibrillation inducibility based on epicardial mapping signals / 生物医学工程学杂志

Atrial fibrillation (AF) is the most common arrhythmia in clinic, which can cause hemodynamic changes, heart failure and stroke, and seriously affect human life and health. As a self-promoting disease, the treatment of AF can become more and more difficult with the deterioration of the disease, and the early prediction and intervention of AF is the key to curbing the deterioration of the disease. Based on this, in this study, by controlling the dose of acetylcholine, we changed the AF vulnerability of five mongrel dogs and tried to assess it by analyzing the electrophysiology of atrial epicardium under different states of sinus rhythm. Here, indices from four aspects were proposed to study the atrial activation rule. They are the variability of atrial activation rhythm, the change of the earliest atrial activation, the change of atrial activation delay and the left-right atrial dyssynchrony. By using binary logistic regression analysis, multiple indices above were transformed into the AF inducibility, which were used to classify the signals during sinus rhythm. The sensitivity, specificity and accuracy of classification reached 85.7%, 95.8% and 91.7%, respectively. As the experimental results show, the proposed method has the ability to assess the AF vulnerability of atrium, which is of great clinical significance for the early prediction and intervention of AF.

Research on grade prediction of Spatholobi Caulis via components-anti-oxidant activity correlations / 中草药

Objective: The model for grade evaluation of Spatholobi Caulis medicinal slices was constructed based on the quality control idea of traditional Chinese medicines that “components reflect activity and activity points to efficacy”. Methods: A method to determinate catechin and epicatechin content by using ultra performance liquid chromatography (UPLC) was proposed. ABTS•+ clearance rate, hydroxyl radical clearance rate and DPPH• clearance rate were used as evaluation indexes of biological activity. Correlations between content and anti-oxidant activity were analyzed by the logistic algorithm. Finally, a “principal component analysis-logistic regression” model for grade prediction of Spatholobi Caulis was constructed. Results: Catechin and epicatechin content in Spatholobi Caulis medicinal slices from different origins was between 0.40-1.26 mg/g and 0.57-2.02 mg/g, respectively. The anti-oxidant indexes ABTS•+, hydroxyl radical and DPPH• clearance rate were between 12.96%-51.76%, 30.65%-66.65%, and 37.65%-60.33%, respectively. The binary logistic regression analysis results showed that five batches were evaluated as excellent, average and poor rank, and four batches were considered as good rank (P > 94%) among 17 batches of Spatholobi Caulis herbal pieces and its two kinds of counterfeit (Sargentodoxa cuneata and Mucuna sempervirens). Conclusion: Binary logistic regression model for grade evaluation of Spatholobi Caulis medicinal slices was constructed preliminarily. It is applicable to assess quality of Spatholobi Caulis herbal pieces. The grading evaluation model of Spatholobi Caulis via logistic regression analysis can be used to classification of Spatholobi Caulis from different sources.

Factors Associated with Common Mental Disorders in Truck Drivers / Fatores Associados aos Transtornos Mentais Comuns em Caminhoneiros

Abstract This study aimed to identify the risk factors of Common Mental Disorders (CMD) using a sample of 565 Brazilian truck drivers. For data capture were applied the Self-Reporting Questionnaire (SRQ-20), Scale subscale of Psychosocial risks and questionnaire with socio-demographic, working and occupational stressors. The results obtained by multivariate binary logistic regression analysis, have explained the 39.9% of variation on CMD. The occupational stressor working hours is the predictor variable with highest impact, may implying in an increase of 5.41 times more chance of the trucker to present CMD. The results indicate actions by management level as work organization and public authorities with regard to the external work conditions.

Resumo Este estudo objetivou identificar os fatores de risco dos Transtornos Mentais Comuns (TMC) em uma amostra de 565 caminhoneiros brasileiros. Para a coleta de dados, foram utilizados o Self-Reporting Questionnaire (SRQ-20), Subescalas da Escala de Riscos Psicossociais e questionários sociodemográfico, laboral e de estressores ocupacionais. Os resultados obtidos por meio da análise de Regressão Logística Binária Multivariada explicaram 39,9% das variações dos TMC. A variável preditora de maior impacto foi o estressor ocupacional jornada de trabalho que implicou em um aumento de 5,41 vezes mais chance do caminhoneiro apresentar TMC. Os resultados sugerem ações por parte dos gestores quanto à organização do trabalho e por parte do poder público no que diz respeito às condições externas de trabalho.

Nomophobia: mobile phone dependence among students of a medical college in Central Odisha, India

Background: Nomophobia, stands for “no mobile phone phobia". The tremendous increase in mobile phone usage among youngsters has led to negative impact on their mental health status. Current study aims at finding out the prevalence of nomophobia (mild, moderate, and severe), various health related conditions and independent risk factors of severe nomophobia among medical students of a tertiary care college and Hospital of Central Odisha.Methods: A cross sectional study carried out among 450 students of a medical college of Central Odisha. Simple random sampling was done. Predesigned pretested questionnaire including Nomophobia questionnaire (NMP-Q) was used for data collection. Data was analyzed using SPSS and logistic regression was used to evaluate the independent risk factors of severe nomophobia.Results: Out of 450 students, 246 (54.6%) were boys and rest were girls. Nomohobia was universally present and students suffering from mild, moderate and severe form of nomophobia comprised of 33 (7.3%), 327 (72.7%) and 90 (20%) respectively. Independent risk factors of severe nomophobia were fourth year of study and above (aOR=2.69), use of costly handsets (aOR=4.56), monthly bill of more than rupees 500 for cell phone use (aOR=6.09) and anxiousness of staying updated with news all the time (aOR=4.86).Conclusions: Nomophobia is a highly prevalent condition among the medical students found across age groups, gender and socio-economic status which depends on phone usage. It is recommended that screening and proper counselling should be available in order to decrease the burden and create awareness about nomophobia among the medical students.

Research on influencing factors of knowledge flow in discrete industry: A case study of Chinese materia medica listed companies / 中草药

Discrete industry is different from the complex industry, the patent citation between enterprises is the main channel of its dominant knowledge flow. In order to help the enterprises to find the imitative innovation objects and the investors to evaluate the value of the listed companies in the discrete industries, this study took the Chinese materia medica listed companies as the research samples, first used the social network analysis method to construct the visual flow chart of knowledge flow, then the K-means clustering was carried out by using the degree centrality and the betweenness centrality of the network graph, and the type of knowledge flow was divided and summarized. Finally, based on the previous classification of the main body, the binary logistic regression was adopted to explore the influence of patent factors and business factors on the knowledge flow from two dimensions of knowledge outflow and inflow. The results showed that enterprise age, technology width, enterprise scale and R & D investment had a significantly positive correlation with the knowledge outflow; The knowledge inflow was positively relative with R & D investment and the number of claims, while with significantly negative correlation with the enterprise age, technology width, scientific relevance and technical concentration.

Factors associated with basketball field goals made in the 2014 NBA finals

AIMS: The main objective of this study was to analyze the factors that preceded field goals made in the 2014 NBA finals considering the number of passes per offense, shooting conditions, and offense type variables. METHODS: We assessed field goals attempted by 27 professional players that participated in the 2014 NBA finals. Data were collected by three researchers through an adapted version of the Technical-Tactical Performance Evaluation Tool in Basketball to systematically analyze all five games of those finals. Descriptive analysis consisted in absolute and relative frequency and inferential statistics were applied through Chi-Square test, Cohen's D for effect size, and binary logistic regression test. Significance levels were set at 5% and all statistics were applied through SPSS 23.0. RESULTS: Shooting efficacy was not associated with the number of passes made per offense. Regression statistics showed that shooting efficacy was highly associated with shooting condition rather than the offense type performed. However, fast breaks seem to lead to better shooting conditions (passively guarded and wide open) when compared to set and regained offenses. CONCLUSION: Evidence pointed to the importance of shooting condition as a determining factor in increasing the probability of field goals made throughout the games analyzed.(AU)

Factors Associated with Trait Anger Level of Juvenile Offenders in Hubei Province: A Binary Logistic Regression Analysis / 华中科技大学学报（医学）（英德文版）

The risk factors of high trait anger of juvenile offenders were explored through question naire study in a youth correctional facility of Hubei province,China.A total of 1090 juvenile offenders in Hubei province were investigated by self-compiled social-demographic questionnaire,Childhood Trauma Questionnaire (CTQ),and State-Trait Anger Expression Inventory-Ⅱ (STAXI-Ⅱ).The risk factors were analyzed by chi-square tests,correlation analysis,and binary logistic regression analysis with SPSS 19.0.A total of 1082 copies of valid questionnaires were collected.High trait anger group (n=316) was defined as those who scored in the upper 27th percentile of STAXI-Ⅱ trait anger scale (TAS),and the rest were defined as low trait anger group (n=766).The risk factors associated with high level of trait anger included:childhood emotional abuse,childhood sexual abuse,step family,frequent drug abuse,and frequent internet using (P＜0.05 or P＜0.01).Birth sequence,number of sibling,ranking in the family,identity of the main care-taker,the education level of care-taker,educational style of care-taker,family income,relationship between parents,social atmosphere of local area,frequent drinking,and frequent smoking did not predict to high level of trait anger (P＞0.05).It was suggested that traumatic experience in childhood and unhealthy life style may significantly increase the level of trait anger in adulthood.The risk factors of high trait anger and their effects should be taken into consideration seriously.

Binary logistic regression analysis of hard palate dimensions for sexing human crania / 대한해부학회지

Sex determination is the preliminary step in every forensic investigation and the hard palate assumes significance in cranial sexing in cases involving burns and explosions due to its resistant nature and secluded location. This study analyzes the sexing potential of incisive foramen to posterior nasal spine length, palatine process of maxilla length, horizontal plate of palatine bone length and transverse length between the greater palatine foramina. The study deviates from the conventional method of measuring the maxillo-alveolar length and breadth as the dimensions considered in this study are more heat resistant and useful in situations with damaged alveolar margins. The study involves 50 male and 50 female adult dry skulls of Indian ethnic group. The dimensions measured were statistically analyzed using Student's t test, binary logistic regression and receiver operating characteristic curve. It was observed that the incisive foramen to posterior nasal spine length is a definite sex marker with sex predictability of 87.2%. The palatine process of maxilla length with 66.8% sex predictability and the horizontal plate of palatine bone length with 71.9% sex predictability cannot be relied upon as definite sex markers. The transverse length between the greater palatine foramina is statistically insignificant in sexing crania (P=0.318). Considering a significant overlap of values in both the sexes the palatal dimensions singularly cannot be relied upon for sexing. Nevertheless, considering the high sex predictability of incisive foramen to posterior nasal spine length this dimension can definitely be used to supplement other sexing evidence available to precisely conclude the cranial sex.

The analysis of correlation about the constitution of Chinese medicine and anxiety / 国际中医中药杂志

Objective To explore the characteristics of constitution according to traditional Chinese medicine and the anxiety susceptibility of the population, providing the theoretical basis for carrying out population intervention in anxiety and taking full advantage of the preventive treatment by investigating anxiety emotion of patients. Methods A cross-sectional study method was adopted. 317 anxiety patients were recruited into an observation group and another 251 anxiety patients were recruited into a control group. Based on the traditional Chinese medicine constitution scale we defined every participant’s constitution type and got the distribution of different constitution types among all the participants. Then we usedχ2 test and binary regression to analyze the impact of constitution on anxiety. Result The observation group constitution type distribution:Qi stagnation(19.24%), Qi deficiency(16.40%), blood stasis(15.46%), damp heat (11.04%), Yang deficiency(10.41%), Yin deficiency(8.83%), phlegm dampness(6.62%), mild quality(5.99%), special intrinsic quality(5.99%). The control group constitution type distribution:damp heat(17.53%), Yin deficiency (14.34%), phlegm dampness (13.94%), Yang deficiency(11.55%),mild quality (11.55%), Qi stagnation (8.76%), Qi deficiency (8.37%), blood stasis (7.97%), special intrinsic quality (5.98%). The result ofχ2 test showed that the distribution of constitution types among participants in the observation group were different from that in the control group and the difference was statistically significant(P0.05). The binary regression result showed that the three constitutions of Qi stagnation, Qi deficiency and blood stasis had significantly positive correlation with anxiety(P<0.05). Odds ratios showed Exp of Qi stagnation, Qi deficiency and blood stasis was 4.447, 3.942 and 3.929. while the other six constitutions are independent factors to anxiety. Conclusion Qi stagnation, Qi deficiency and blood stasis constitutions were possible risk factors for anxiety.

Binary logistic regression analysis of the factors influencing the efficacy of pre-hospital CPR / 中华急诊医学杂志

Objective To investigate the independent factors influencing the efficacy of pre-hospital CPR effect. Method The data base with 1376 cases was set up with EpiData software by means of questionnaires and the information was provided by the survivals from cardiopulmonary arrest( CA)saved with cardiopulmonary resuscitation(CPR), and the data were analyzed with SPSS 13.0 software to carry out binary logistic regression. Through single factor analysis, the factors with emerged statistical significance were chosen as variances. Results With regard to the restoration of spontaneous circulation(ROSC), the rescue did by the first witness was the protective factor(PF)( OR = 2.21, P = 0.001, 95.0% CI=1.356-3.602); the male was the risk factor(RF) contrasted with the female( OR = 0. 515, P =0. 006, 95.0%0 CI = 0.320 - 0. 26) ; ages between 20 and 29 years old had higher likelihood of ROSC than group ≥81 years old( OR = 3.241, P = 0.026, 95.0%CI = 1.146 -9.138); the length of CA time before CPR was RF(OR = 0.913, P = 0.000, 95.0%CI = 0.887-0.948);ventricular fibrillation(VF) was PF compared with asystole( OR = 5.092, P = 0.000, 95.0%CI=2.927 -8.861); electric shock was PF(OR = 3.384, P = 0.000, 95.0%CI = 2.033 - 5.635); epinephrine dosage 0 - 4 mg had higher likelihood of ROSC than > 5 nag dosage( OR = 3. 255, P = 0. 001, 95.0% CI = 1. 606 -6.597). In respect of probability about victims at the tittle reached hospital alive, ages of 2- 12 and 13 - 19 years old had higher rations than ≥81 years old( OR = 12.818, P = 0.029, 95.0% CI = 1.299 - 126.508)( OR = 10.505, P = 0.036, 95.0% CI = 1.161-95.058); the length of CA time before CPR was RF(OR =0.862, P = 0.000, 95.0%CI = 0.821-0.906); VF was PF compared with asystole(OR = 7.330, P =0.000, 95.0%CI = 3.962 - 13.560). Conclusions ECG change before CPR, rescue by the first witness,electric shock, the length of CA time before CPR, epinephrine dosage, gender and age were independent influencing factors of pre-hospital CPR for the emergency of ROSC. Age, the length of CA time before CPR and ECG before CPR were influencing factors of pre-hospital CPR for patients at the time transferred to hospital alive.