Search

Objetive. To compare the psychometric characteristics of the Food Insecurity Experience Scale (FIES) and the grade of similitude or difference among Colombia, Guatemala, and Mexico during three years. Materials and methods. Psychometric comparison using the Rasch model to calculate the relative severity of each item in FIES, INFIT and contrast in the Differential Functioning of Items (c-DIF). Results. The majority of items showed a relative severity corresponding to the theoretical construct and acceptably fit the model (INFIT=0.7-1.3). No c-DIF above 1.0 logit was observed in the comparison men vs women. In the comparison among countries by year 87% of the items showed c-DIF below 0.5 logit. Conclusion. The FIES presents psychometric characteristics corresponding to the theoretical construct of the tool. Future studies with the inclusion of more countries and more time points are essential to evaluate the relative severity, behavior and distribution of items.

Objective. To compare the psychometric characteristics of the Food Insecurity Experience Scale (FIES) and the grade of similitude or difference among Colombia, Guatemala, and Mexico during three years. Materials and methods. Psychometric comparison using the Rasch model to calculate the relative severity of each item in FIES, INFIT and contrast in the Differential Functioning of Items (c-DIF). Results. The majority of items showed a relative severity corresponding to the theoretical construct and acceptably fit the model (INFIT=0.7-1.3). No c-DIF above 1.0 logit was observed in the comparison men vs women. In the comparison among countries by year 87% of the items showed c-DIF below 0.5 logit. Conclusion. The FIES presents psychometric characteristics corresponding to the theoretical construct of the tool. Future studies with the inclusion of more countries and more time points are essential to evaluate the relative severity, behavior and distribution of items. [ABSTRACT FROM AUTHOR]

La traducción simple de un cuestionario puede dar lugar a interpretaciones erróneas debido a diferencias culturales y de lenguaje. Cuando se utilicen cuestionarios desarrollados en otros países e idiomas en estudios científicos, además de traducirlos, es necesaria su adaptación cultural y validación. El objetivo de este trabajo es revisar la literatura sobre la traducción, adaptación cultural y validación (TACV) de cuestionarios de salud, y sintetizar y proponer recomendaciones basadas en la literatura científica que faciliten este proceso. La TACV debe seguir un proceso sistematizado, por lo que se recomiendan dos etapas: a) adaptación cultural: traducción directa, síntesis, traducción inversa, consolidación por comité de expertos y pre-test, y b) validación (con hasta siete pasos): evaluación de la consistencia interna, fiabilidad intra e interobservador, validez lógica, de contenido, criterio y constructo. La falta de equivalencia de los cuestionarios limita las posibilidades de comparación entre poblaciones con idiomas o culturas diferentes y el intercambio de información en la comunidad científica.The simple translation of a questionnaire may lead to misinterpretation due to language and cultural differences. When using questionnaires developed in other countries and languages in scientific studies it is necessary, besides the translation, to carry out a cross-cultural adaptation and validation. Our objective was to review the literature on cross-cultural adaptation and validation (CCAV) of health questionnaires, and to synthesize and propose recommendations based on the scientific literature to facilitate this process. The CCAV should follow a systematic process. Two steps are recommended: 1) cross-cultural adaptation: direct translation, synthesis, back translation, expert committee consolidation and pre-testing, and 2) validation (with up to seven steps): assessment of internal consistency, reliability, intra- and inter-observer reliability, face, content, criterion and construct validity. Lack of equivalence between questionnaires limits the comparability of results among populations with different cultures and languages and the exchange of information in the scientific community.

OBJETIVO: Probar la validez de constructo, concurrente y externa, y la consistencia interna de la Escala de Depresión del Center for Epidemiologic Studies (CES-D-R) en adolescentes. MATERIAL Y MÉTODOS: Estudio transversal con dos cohortes de estudiantes de secundaria del DF. El cuestionario incluyó la CES-D-R y otras escalas sobre problemas relacionados con suicidio, violencia, exposición a oportunidades y consumo de drogas. La participación fue voluntaria y anónima. RESULTADOS: Se incluyó a 1 549 estudiantes (edad promedio, 14 años; DE=1.2). La escala mostró una estructura de seis factores (varianza explicada, 55%), consistencia interna excelente (a=0.93), discriminación significativa entre puntajes extremos (z=-3.695, pOBJECTIVE: To assess the internal consistency, as well as the construct, concurrent and external consistency of the Center for Epidemiologic Studies Depression Scale (CES-D-R) in Mexican adolescents. MATERIAL AND METHODS: The data are from two samples of middle-school students from Mexico City. The questionnaire included the CES-D-R and other scales for suicide problems, peer and family violence, and drug use. RESULTS: The sample included 1 549 students (mean age 14 years, SD=1.2). The CES-D-R showed a six-factor structure (explained variance, 55%) with an excellent internal consistency (a=0.93), a significant discriminative power for opposite scores (z=-3.695, p

Objective. This article validates the statistical consistency of two food security scales: the Mexican Food Security Scale (EMSA) and the Latin American and Caribbean Food Security Scale (ELCSA). Materials and methods. Validity tests were conducted in order to verify that both scales were consistent instruments, conformed by independent, properly calibrated and adequately sorted items, arranged in a continuum of severity. The following tests were developed: sorting of items; Cronbach's alpha analysis; parallelism of prevalence curves; Rasch models; sensitivity analysis through mean differences' hypothesis test. Results. The tests showed that both scales meet the required attributes and are robust statistical instruments for food security measurement. Conclusion. This is relevant given that the lack of access to food indicator, included in multidimensional poverty measurement in Mexico, is calculated with EMSA. [ABSTRACT FROM AUTHOR]

The simple translation of a questionnaire may lead to misinterpretation due to language and cultural differences. When using questionnaires developed in other countries and languages in scientific studies it is necessary, besides the translation, to carry out a cross-cultural adaptation and validation. Our objective was to review the literature on cross-cultural adaptation and validation (CCAV) of health questionnaires, and to synthesize and propose recommendations based on the scientific literature to facilitate this process. The CCAV should follow a systematic process. Two steps are recommended: 1) cross-cultural adaptation: direct translation, synthesis, back translation, expert committee consolidation and pre-testing, and 2) validation (with up to seven steps): assessment of internal consistency, reliability, intra- and inter-observer reliability, face, content, criterion and construct validity. Lack of equivalence between questionnaires limits the comparability of results among populations with different cultures and languages and the exchange of information in the scientific community. [ABSTRACT FROM AUTHOR]

OBJETIVO: Construir y validar, en el país, una escala para medir violencia hacia las mujeres por parte de la pareja masculina. Asimismo, construir un índice de severidad que permita establecer una dimensión del daño emocional y físico de las acciones violentas perpetradas en contra de las mujeres. MATERIAL Y MÉTODOS: La muestra consistió de 26 042 mujeres de 15 años y más. Se incluyeron las respuestas de las mujeres que contestaron a toda la escala de violencia del cuestionario de la Encuesta Nacional sobre Violencia contra las Mujeres 2003 (ENVIM 2003). Este cuestionario, aplicado a usuarias de servicios de salud, estuvo integrado por 17 secciones, de las cuales una fue escala de violencia de 27 reactivos. El objetivo era medir distintos grados de violencia en sus diferentes modalidades: violencia física, emocional, sexual y económica. Se construyó un índice de severidad a partir de dos procedimientos: Procedimiento 1: análisis de confiabilidad, validez y factorial a partir de las respuestas de las mujeres a la escala de violencia y Procedimiento 2: realización de un jueceo para asignar pesos diferenciales a cada reactivo de la escala. RESULTADOS: Los resultados del Procedimiento 1(confiabilidad y validez), usando todos los reactivos, arrojaron un Alpha de Cronbach cuyos resultados indican una consistencia interna muy alta de 0.99. Por otro lado, el análisis factorial con rotación Varimax arrojó una solución de cuatro factores con cargas factoriales de cada reactivo mayores a 0.40, que se identificaron como: Factor 1 Violencia psicológica; Factor II Violencia física; Factor III Violencia física severa; Factor IV Violencia sexual. La combinación de los cuatro factores explicó 62.2% del total de la varianza. Procedimiento 2: a través de un jueceo se obtuvo una tabla de pesos asignados a cada acción evaluada. De los 27 reactivos iniciales, se eliminaron ocho como resultado del análisis factorial y otros dos correspondientes a violencia económica, quedando un total de 19 reactivos a los que se les aplicaron los pesos obtenidos en el jueceo. El puntaje mínimo fue 0 y el máximo fue de 354. A través de la clasificación propuesta, se calcularon las siguientes prevalencias: 21% sufrió, en los últimos 12 meses, algún tipo de violencia por parte de su pareja actual. La violencia por tipos se distribuyó de la siguiente manera: psicológica 18.5%; física 10.1%; física severa 6.7%; y sexual 7%. CONCLUSIÓN: La escala de violencia desarrollada demostró ser un instrumento útil y confiable para medir la violencia masculina ejercida en las relaciones de pareja. Así entonces, se sugiere ampliar su uso en otras mediciones nacionales y locales para permitir la comparación posterior de los resultados.OBJECTIVE: To construct and validate a scale to assess violence by the male partner against women. An index of severity of the emotional and physical damage was also designed to assess the intensity of the violent actions against women. MATERIAL AND METHODS: The sample consisted of a total of 26 042 women who participated as respondents in the National Survey on Violence against Women (ENVIM per its abbreviation in Spanish) conducted in Mexico during 2003. Respondents were all users of health services provided by the Mexican government. The questionnaire was organized into 17 sections, one of which was a 27-item scale to assess partner violence. The purpose of this scale was to measure the type (physical, emotional, sexual and financial) and degree of violence based on severity. A severity index was constructed based on two procedures: 1) the validity, reliability, and factor analyses of the scale and 2) the assessment of severity by expert judges who assigned a value to each item of the scale. RESULTS: The validity and reliability results indicated this scale has adequate internal validity (Cronbach's Alpha=0.99). The factor analysis with Varimax rotation yielded a four-factor solution. The factors were: 1) Psychological violence; 2) Physical violence; 3) Severe physical violence; and 4) Sexual violence. The combination of the four factors accounted for 62.2% of the variance in the scale. Using the ratings from the judges a table of values for each of the violent actions described was obtained. The scores assigned by the judges ranged from 0 to 354. Results revealed a prevalence of 21% partner violence in the last twelve months. The prevalence of psychological violence was 18.5%; of physical violence 10.1%; severe physical violence 6.7% and sexual violence 7.0%. CONCLUSION: The scale of violence described in this article is a very useful and reliable instrument to assess marital violence against women. It is suggested that this instrument be used in other settings to compare results with different samples.

Objective. To assess the internal consistency, as well as the construct, concurrent and external consistency of the Center for Epidemiologic Studies Depression Scale (CES-D-R) in Mexican adolescents. Material and Methods. The data are from two samples of middle-school students from Mexico City. The questionnaire included the CES-D-R and other scales for suicide problems, peer and family violence, and drug use. Results. The sample included 1 549 students (mean age 14 years, SD=1.2). The CES-D-R showed a six-factor structure (explained variance, 55%) with an excellent internal consistency (á=0.93), a significant discriminative power for opposite scores (z=-3.695, p<0.001), and a positive significant correlation with the Roberts Suicidal Ideation Scale (r=0.685, p<0.001). Conclusions. The CES-D-R has excellent psychometric characteristics for Mexican adolescents and therefore is deemed as an adequate tool for the assessment of depressive symptoms in large samples to detect mental health needs and design preventive interventions. [ABSTRACT FROM AUTHOR]

Objective. To construct and validate a scale to assess violence by the male partner against women. An index of severity of the emotional and physical damage was also designed to assess the intensity of the violent actions against women. Material and Methods. The sample consisted of a total of 26 042 women who participated as respondents in the National Survey on Violence against Women (ENVIM per its abbreviation in Spanish) conducted in Mexico during 2003. Respondents were all users of health services provided by the Mexican government. The questionnaire was organized into 17 sections, one of which was a 27-item scale to assess partner violence. The purpose of this scale was to measure the type (physical, emotional, sexual and financial) and degree of violence based on severity. A severity index was constructed based on two procedures: 1) the validity, reliability, and factor analyses of the scale and 2) the assessment of severity by expert judges who assigned a value to each item of the scale. Results. The validity and reliability results indicated this scale has adequate internal validity (Cronbach's Alpha=0.99).The factor analysis with Varimax rotation yielded a four-factor solution. The factors were: 1) Psychological violence; 2) Physical violence; 3) Severe physical violence; and 4) Sexual violence. The combination of the four factors accounted for 62.2% of the variance in the scale. Using the ratings from the judges a table of values for each of the violent actions described was obtained. The scores assigned by the judges ranged from 0 to 354. Results revealed a prevalence of 21% partner violence in the last twelve months. The prevalence of psychological violence was 18.5%; of physical violence 10.1%; severe physical violence 6.7% and sexual violence 7.0%. Conclusion. The scale of violence described in this article is a very useful and reliable instrument to assess marital violence against women. It is suggested that this instrument be used in other settings to compare results with different samples. [ABSTRACT FROM AUTHOR]