Análisis de la deserción temprana y sus factores explicativos en la universidad de los llanos con datos de ingreso, 2015-2

Esta investigación tiene como principal propósito analizar la probabilidad de deserción temprana de los estudiantes de la Universidad de los Llanos mediante un modelo de regresión logística. Además, identificar cuáles son las variables de mayor incidencia en la deserción temprana. Para la construcción del modelo se tomó como muestra la información de 574 estudiantes que ingresaron en la cohorte 2015-2 y que para el periodo 2018-1 eran registrados como vigentes o reportaban como último periodo matriculado cualquiera de los cuatro primeros semestres. Los resultados dan cuenta de que un buen puntaje en la prueba Saber 11, el ser mujer, no haber reprobado años durante el bachillerato, el haber cursado estudios antes y si los padres conviven, disminuye la probabilidad de deserción; así mismo, el haber egresado de un colegio privado aumenta esta probabilidad. De todas las facultades en las que se puede matricular el estudiante, las que mayor riesgo tienen de deserción temprana son la de Ciencias Básicas e Ingeniería y la Facultad de Ciencias de la Salud.

The main purpose of this study is to analyze the early dropout probability in the University of Los Llanos students using a logistic regression model and to identify which are the variables with a higher incidence value. To build the model, data were taken from 574 students who had been admitted in the 2015 second semester and were registered as active or whose last semester was one of the last four. As result, the dropout factor decreases if the student had a high score in Saber 11 test, is a woman, had not to fail any school year, had taken some courses before and his parents are alive and increase if the student comes from a private school. The faculties with the high dropout index are Basic Sciences and Engineering, and Health Sciences.

Determinantes do emprego secundário e informalidade: evidências adicionais para o mercado de trabalho brasileiro / Determinants of secondary employment and informality: additional evidence for the Brazilian labor market / Determinantes del empleo secundario e informalidad: evidencias adicionales para el mercado de trabajo brasileño

O objetivo deste estudo é analisar os fatores que determinam a escolha de um indivíduo por um emprego secundário e como tal decisão está relacionada com a informalidade. Para tanto, a partir dos dados da Pesquisa Nacional por Amostra de Domicílios (PNAD) contínua, é estimado um modelo logit de efeitos aleatórios para verificar os fatores que influenciam nesta decisão de inserção. Os resultados apontam que o rendimento do trabalho principal, a escolaridade e a informalidade no emprego principal influenciam positivamente na decisão dos trabalhadores em ingressar em um emprego secundário.

This study aims to analyze the factors that determine an individual's choice of having secondary employment and how this decision is related to informality. To that end, based on data from "Pesquisa Nacional por Amostra de Domicílios (PNAD) contínua", we estimate a random effects Logit model to verify factors influencing this decision of insertion. Results indicate that the main work income, schooling and informality in the main employment have a positive influence on the worker's decision to seek secondary employment.

El objetivo de este estudio es analizar los factores que determinan la elección de un individuo de tener un empleo secundario y cómo esta decisión está relacionada con la informalidad. Para ello, a partir de los datos de la Pesquisa Nacional por Amostra de Domicílios (PNAD) contínua, se estima un modelo logit de efectos aleatorios para verificar los factores que influyen en esta decisión de inserción laboral. Los resultados apuntan a que el rendimiento del trabajo principal, la escolaridad y la informalidad en el empleo principal influyen positivamente en la decisión de los trabajadores de obtener en un empleo secundario.

Analysis of Nutrition Teachers' Awareness of Necessity for an Operating School Meal Support Center in Chungnam / 대한지역사회영양학회지

OBJECTIVES: We investigated the operation needs of school meal support centers (SMSC) in Chungnam-do based on analysis of nutrition teachers' perception of them. METHODS: The Chungnam government established the first SMSC in 2012. Thirteen SMSCs are currently being operated in Chungnam-do. To analyze the results quantitatively, we investigated nutrition teachers opinions regarding the necessity for SMSCs as a dependent variable and derived the independent variables based on the causal relationships with dependent variables using the ordered logit model. Those independent variables included region, school type, number of students, attitude regarding free meal policy, satisfaction with school meal policy, and preference for local food. RESULTS: Briefly, teachers in the region in which the SMSC was located more strongly supported the SMSC. In addition, teachers in public schools with a smaller number of students believed that having a SMSC is more beneficial, and that other variables also affected the necessity for SMSCs. Moreover, nutrition teachers preferred local foods rather than organic foods because of the unstable supply of organic foods. CONCLUSIONS: Based on the results of this study, it was recommended that the local government implement the policy consistently. Moreover, it was recommended that the government operate the SMSC more efficiently, enhance the roles of the SMSC as the local organization responsible for student nutritional planing and expand the coverage of agricultural products.

Analysis of Nutrition Teachers' Awareness of Necessity for an Operating School Meal Support Center in Chungnam / 대한지역사회영양학회지

OBJECTIVES: We investigated the operation needs of school meal support centers (SMSC) in Chungnam-do based on analysis of nutrition teachers' perception of them. METHODS: The Chungnam government established the first SMSC in 2012. Thirteen SMSCs are currently being operated in Chungnam-do. To analyze the results quantitatively, we investigated nutrition teachers opinions regarding the necessity for SMSCs as a dependent variable and derived the independent variables based on the causal relationships with dependent variables using the ordered logit model. Those independent variables included region, school type, number of students, attitude regarding free meal policy, satisfaction with school meal policy, and preference for local food. RESULTS: Briefly, teachers in the region in which the SMSC was located more strongly supported the SMSC. In addition, teachers in public schools with a smaller number of students believed that having a SMSC is more beneficial, and that other variables also affected the necessity for SMSCs. Moreover, nutrition teachers preferred local foods rather than organic foods because of the unstable supply of organic foods. CONCLUSIONS: Based on the results of this study, it was recommended that the local government implement the policy consistently. Moreover, it was recommended that the government operate the SMSC more efficiently, enhance the roles of the SMSC as the local organization responsible for student nutritional planing and expand the coverage of agricultural products.

Using the cumulative odds Logit model to explore the application of the questionnaire derived from PANSS / 药学学报

Currently, aripiprazole, olanzapine and risperidone are three anti-psychiatry agents commonly used in the treatment of schizophrenia. Although the efficacy of these drugs is good, schizophrenia cannot be completely cured yet. Patients need long-term medication. The family members of patients may play a key role to understand the disease status of patients after patient discharge from hospital. PANSS is a commonly used scale in the clinic to evaluate the disease status and drug effects of anti-psychiatry agents. It was professionally written, and is not user friendly to amateurs. In the previous study, we developed a questionnaire for patient's family members to monitor the disease status. In this study, we explored the correlations between the results of questionnaire and 5 kinds of disease state corresponding to different PANSS score interval using the cumulative odds Logit model. The final results show that the model had relatively good prediction ability for aripiprazole, olanzapine and risperidone, suggesting that the questionnaire has an extensive prospect of clinical applications.

Factors influencing brachial-ankle pulse wave velocity in people undergoing health examination and model evaluation: Report of 4 159 case / 第二军医大学学报

Objective To analyze the factors influencing brachial-ankle pulse wave velocity (baPWV) and to establish a logit model for predicting baPWV. Methods The data of 4 159 cases who underwent health examination from 2010 to 2014 in our hospital were retrospectively analyzed. The parameters included gender, age, systolic blood pressure, diastolic blood pressure, pulse, fasting glucose, triglyceride, cholesterol, alanine aminotransferase, glutamyl transpeptidase and cholesterol, low density lipoprotein (LDL), high density lipoprotein (HDL), and uric acid. Logistic regression was used to explore the influencing factors of baPWV, and a regression model was established to predict baPWV and it was evaluated. Results Univariate analysis showed that, except for HDL, all the other parameters above were significantly different between normal baPWV group and abnormal baPWV group (P<0.05). Multivariable analysis yielded the following logit model: logit (p)=-17.888+0.001×uric acid 0.004×alanine aminotransferase 0.105×fasting glucose 0.023×pulse 0.032×diastolic blood pressure 0.061×systolic blood pressure 0.092×age 0.411×sex, which showed a correct predicting rate of 79.6% for baPWV in health examination population, with the ROC area being 0.869 (95%CI:0.859-0.879). Conclusion The baPWV values can be influenced by gender, age, systolic blood pressure, diastolic blood pressure, pulse, fasting blood glucose, alanine aminotransferase and uric acid levels, and logit model may serve as a satisfactory model for these types of study.

Generalized lineal models for the analysis of binary data from propagation experiments of Brazilian orchids

This study aimed at applying the generalized linear models (GLM) for the analysis of a germination experiment of Cattleya bicolor in which the response variable was binary. The purpose of this experiment was to assess the effects of the storage temperatures and culture mediums on the seed viability. The analyses of variance was also carried out either with or without the data transformation. All the statistical approaches indicated the importance of the storage temperature on the seed viability. But, the culture media and interaction effects were significant only by the GLM. Based on the GLM, the seeds stored at 10°C increased viability, in which the coconut medium achieved the best performance. The results emphasized the importance of adopting the GLM to improve the reliability in many situations where the response variable followed a non-normal distribution.

A técnica de propagação in vitro é considerada efetiva para fins comerciais e de conservação de orquídeas. A metodologia de modelos lineares generalizados (MLG) foi usada para analisar um experimento de germinação de Cattleya bicolor. O propósito do experimento foi avaliar os efeitos da temperatura de armazenamento e dos meios de cultivo sobre a germinação, cuja resposta foi considerada binária. Análise convencional com ou sem transformação de dados foram também realizados. Todas as abordagens estatísticas indicaram a importância da temperatura sobre a viabilidade das sementes. Entretanto, os efeitos de meios de cultivo e interação foram significativos apenas para MLG. As sementes armazenadas a 10°C incrementaram sua viabilidade, onde o meio a base de coco atingiu o melhor desempenho. Os resultados enfatizam a importância de adotar MLG, para melhorar a confiabilidade em situações onde a variável resposta segue uma distribuição distinta à normal.