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Background: Insomnia is the sleep disorder with the highest incidence worldwide. It is estimated that this condition increases the risk of developing psychiatric, neurological, and cardiovascular problems. Due to this, it is important to have brief, reliable and valid psychometric instruments that allow health personnel their timely detection in first level health centers. Objectives: Analyze the psychometric properties of the Insomnia Severity Index (ISI) in its version adapted to Spanish in a sample of Mexican adults. Methods: The sample consisted of 310 adults, 223 (71.9%) women and 87 (28.1%) men. The comparison of four ISI measurement models of one, two and three factors and a bifactor model was carried out, its internal consistency was analyzed, an analysis of invariance by sex and correlation analysis with the Athens and Epworth scales. Results: The ISI bifactor model with a general factor (G) and a specific factor for insomnia impact (I) showed the best fit indices (χ2= 29.48,gl= 11, SRMR= 0.03, CFI= 0.98, TLI= 0.96, RMSEA= 0.07), and demonstrated configural, metric, and scalar invariance by sex. Adequate reliability was demonstrated by Omega coefficients (General: ω G = 0.86, Impact: ω I = 0.86) showed adequate reliability; the scale showed very strong correlations with the Athens scale (rAGoverall= 0.84; rAImpact=0.75) and weak to moderate correlations with the Epworth scale (r EGeneral = 0.39;r EImpact= 0.44). Conclusions: The ISI bifactor version in Spanish presents adequate psychometric properties for the measurement of insomnia and, as it is a brief tool, it can be used at different levels of health care.

Introducción: El insomnio es el trastorno de sueño de mayor incidencia a nivel mundial. Se estima que este padecimiento eleva el riesgo de desarrollar problemas psiquiátricos, neurológicos y cardiovasculares. Debido a ello es importante tener instrumentos psicométricos breves, confiables y válidos que permitan al personal de salud su oportuna detección en los centros de salud de primer nivel. Objetivo: Analizar las propiedades psicométricas del Índice de Severidad de Insomnio (ISI) en su versión adaptada al español en una muestra de adultos mexicanos. Método: Participaron 310 adultos, 223 (71.9%) mujeres y 87 (28.1%) hombres. Se realizó la comparación de cuatro modelos de medida del ISI de uno, dos y tres factores y un modelo bifactor, se analizó su consistencia interna, un análisis de invarianza por sexo y análisis de correlación con las escalas de Atenas y de Epworth. Resultados: Se encontró que el modelo ISI bifactor con un factor general (G) y uno específico de Impacto del insomnio (I) fue el que mostró los mejores índices de ajuste (χ2=29.48,gl= 11, SRMR= 0.03, CFI= 0.98, TLI= 0.96, RMSEA= 0.07), y que presenta invarianza configuracional, métrica y escalar por sexo. El coeficiente Omega (General: ω G =0.86, Impacto: ω I =0.86 ) mostraron una confiabilidad adecuada; la escala mostró correlaciones muy fuertes con la escala Atenas (r AGeneral =0.84; rAImpacto=0.75) y débiles a moderadas con la escala Epworth (r EGeneral =0.39; rEImpacto=0.44). Conclusiones: La versión ISI bifactor en español presenta adecuadas propiedades psicométricas para la medición del insomnio y al ser una herramienta breve puede emplearse en diferentes niveles de atención a la salud.

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Background: Insomnia is the sleep disorder with the highest incidence worldwide. It is estimated that this condition increases the risk of developing psychiatric, neurological, and cardiovascular problems. Due to this, it is important to have brief, reliable and valid psychometric instruments that allow health personnel their timely detection in first level health centers. Objectives: Analyze the psychometric properties of the Insomnia Severity Index (ISI) in its version adapted to Spanish in a sample of Mexican adults. Methods: The sample consisted of 310 adults, 223 (71.9%) women and 87 (28.1%) men. The comparison of four ISI measurement models of one, two and three factors and a bifactor model was carried out, its internal consistency was analyzed, an analysis of invariance by sex and correlation analysis with the Athens and Epworth scales. Results: The ISI bifactor model with a general factor (G) and a specific factor for insomnia impact (I) showed the best fit indices (χ2= 29.48, gl = 11, SRMR= 0.03, CFI= 0.98, TLI= 0.96, RMSEA= 0.07), and demonstrated configural, metric, and scalar invariance by sex. Adequate reliability was demonstrated by Omega coefficients (General: ωG= 0.86, Impact: ωI= 0.86) showed adequate reliability; the scale showed very strong correlations with the Athens scale (rAGoverall= 0.84; rAImpact=0.75) and weak to moderate correlations with the Epworth scale (rEGeneral= 0.39; rEImpact=0.44). Conclusions: The ISI bifactor version in Spanish presents adequate psychometric properties for the measurement of insomnia and, as it is a brief tool, it can be used at different levels of health care.

Introducción: El insomnio es el trastorno de sueño de mayor incidencia a nivel mundial. Se estima que este padecimiento eleva el riesgo de desarrollar problemas psiquiátricos, neurológicos y cardiovasculares. Debido a ello es importante tener instrumentos psicométricos breves, confiables y válidos que permitan al personal de salud su oportuna detección en los centros de salud de primer nivel. Objetivo: Analizar las propiedades psicométricas del Índice de Severidad de Insomnio (ISI) en su versión adaptada al español en una muestra de adultos mexicanos. Método: Participaron 310 adultos, 223 (71.9%) mujeres y 87 (28.1%) hombres. Se realizó la comparación de cuatro modelos de medida del ISI de uno, dos y tres factores y un modelo bifactor, se analizó su consistencia interna, un análisis de invarianza por sexo y análisis de correlación con las escalas de Atenas y de Epworth. Resultados: Se encontró que el modelo ISI bifactor con un factor general (G) y uno específico de Impacto del insomnio (I) fue el que mostró los mejores índices de ajuste (χ2=29.48, gl= 11, SRMR= 0.03, CFI= 0.98, TLI= 0.96, RMSEA= 0.07), y que presenta invarianza configuracional, métrica y escalar por sexo. El coeficiente Omega (General: ωG =0.86, Impacto: ωI=0.86 ) mostraron una confiabilidad adecuada; la escala mostró correlaciones muy fuertes con la escala Atenas (rAGeneral= 0.84; rAImpacto=0.75) y débiles a moderadas con la escala Epworth (rEGeneral= 0.39; rEImpacto=0.44). Conclusiones: La versión ISI bifactor en español presenta adecuadas propiedades psicométricas para la medición del insomnio y al ser una herramienta breve puede emplearse en diferentes niveles de atención a la salud.

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PURPOSE: To analyze the factorial structure of the eight short versions of the Body Shape Questionnaire (BSQ) and analyze the factorial invariance of the best model, its convergent validity and its internal consistency in three age groups of Mexican women. METHODS: Women attending middle school (n = 261), high school (n = 245) and university (n = 296) participated in the study; their average age was 16.52 years (SD = 2.98), and they completed the BSQ, the Eating Attitudes Test (EAT-40) and the Questionnaire on the Influences of the Aesthetic Body Ideal (CIMEC, its acronym in Spanish). RESULTS: The BSQ-8D model showed the best goodness-of-fit indices and evidence for configural, metric, scalar and structural invariance. Both the Cronbach's alpha coefficient and the Omega coefficient for the BSQ-8D were .89. Likewise, the BSQ-8D was correlated with the EAT-40 (r = .60, p < .001) and the CIMEC (r = .77, p < .001), and both the total score and its items discriminated between women with and without abnormal eating behaviors (p < .001). CONCLUSION: The BSQ-8D has the best psychometric properties for the measurement of body dissatisfaction in the general population of Mexican women. LEVEL OF EVIDENCE: Level V, cross-sectional descriptive study.

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Resumen La enfermedad renal crónica (ERC) constituye una de las principales causas de mortalidad a nivel mundial. Se calcula que en México existen alrededor de 140.000 pacientes con este padecimiento. El presente trabajo tuvo como objetivo comprender los factores que facilitan e inhiben la adherencia al tratamiento de los pacientes pediátricos con ERC, dando énfasis en el abordaje interdisciplinario y en la inclusión del/la psicólogo/a para favorecer la atención integral de los pacientes. Se realizó un estudio descriptivo de tipo cualitativo, por medio de la técnica de entrevista con análisis por categorías. Participaron cuatro profesionales: un médico, una enfermera, una nutrióloga y una psicóloga del Hospital Infantil y de la Clínica de Hemodiálisis Galeno en Morelia, Michoacán, México. Los resultados mostraron la importancia del acompañamiento psicológico al paciente para la aceptación del diagnóstico, el manejo emocional, la adherencia al tratamiento y apoyo social, en especial con su cuidador/a primario. Finalmente, se propone un modelo de atención al paciente con ERC desde un enfoque interdisciplinario.

Abstract Chronic Kidney Disease (CKD) is one of the main causes of mortality worldwide. In Mexico there are around 140,000 patients with this condition. The aim of this research was understand the factors that facilitate and inhibit the adherence to treatment of pediatric patients with CKD, with interdisciplinary approach and the inclusion of the psychologist to promote comprehensive patient care. A descriptive qualitative study was carried out by the interview technique with analysis by categories. Four professionals participated: a doctor, a nurse, a nutritionist and a psychologist of the Children's Hospital and of Galeno Hemodialysis Clinic in Morelia, Michoacán, Mexico. The results showed the importance of psychological support to the patient for the acceptance of the diagnosis, emotional management, adherence to treatment and social support, especially with their primary caregiver. Finally, a model of CKD patient care is proposed from an interdisciplinary approach.

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Abstract The purpose of the present study is to evaluate the internal structure of the Spanish adaptation of the Beck Hopelessness Scale (Beck et al., 1974) given its usefulness and relevance in the prediction of suicidal behaviors. The responses to the scale of 1260 university students (M = 4.79, SD = 4.29) and of a clinical sample in which 150 young people with suicide attempt of high lethality (M = 8.51, SD = 2.38) participated were analyzed. The internal structure of the scale is examined by confirmatory factor analysis (CFA) in three phases. In the first phase, the original model is compared with four models found in the different adaptations to Spanish; in the second phase, models that analyze acquiescence are taken into account, and in the third phase, a cross-validation of those models with a clinical population is made. The results indicate that the scale is one-dimensional both in the case of clinical samples (χ2 = 154.84, gl = 135, p <0.001, CFI = 0.99, TLI = 0.99, RMSEA = 0.03), as well as in the general population. However, for the latter, a method factor was added for the treatment of acquiescence (χ2 = 252.14, gl = 134, p <0.001, CFI = 0.95, TLI = 0.94, RMSEA = 0.03). The results show the importance of using analyzes and models that consider the nature of the data and the characteristics of the sample to provide more solid evidence for construct validity.

Resumen El propósito del presente estudio fue evaluar la estructura interna de la adaptación al español de Escala de Desesperanza de Beck et al. (1974), dada su utilidad y relevancia en la predicción de conductas suicidas. Para esto, se analizaron las respuestas a la escala de 1260 estudiantes universitarios (M = 4.79; DT = 4.29) y de una muestra clínica en la que participaron 150 jóvenes con intento de suicidio de alta letalidad (M = 8.51; DT = 2.38). Se examinó la estructura interna por medio del Análisis factorial confirmatorio (AFC) en tres fases: en la primera, se comparó el modelo original con cuatro modelos encontrados en las diferentes adaptaciones al español; en la segunda, se tomaron en cuenta modelos que analizan la aquiescencia; y en la tercera, se hizo una validación cruzada de esos modelos con población clínica. Los resultados señalan que la escala es unidimensional tanto en el caso de las muestras clínicas(χ2 = 154.84, gl = 135, p < 0.001, CFI = 0.99, TLI = 0.99, RMSEA = 0.03) como en la población universitaria; sin embargo, a esta última se le añadió un factor de método para el tratamiento de la aquiescencia (χ2 = 252.14, gl = 134, p < 0.001, CFI = 0.95, TLI = 0.94, RMSEA = 0.03). Los resultados muestran la importancia de utilizar análisis y modelos que consideren la naturaleza de los datos y las características de la muestra para aportar evidencias más sólidas para la validez de constructo.

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Currently, information about the psychometric properties of the Social Support Networks Scale (SSNS) for family caregivers of children with cancer is not yet available; therefore, there is no empirical evidence of its validity and reliability to support its use in this population. The aim of this study is to determine a factorial model of the SSNS, estimate its internal consistency reliability, describe its distribution, and check its concurrent validity. A convenience sample of 633 family caregivers of children with cancer hospitalized in a National Institute of Health in Mexico City was collected. The SSNS, a sociodemographic variables questionnaire, and three instruments that evaluated family functioning, quality of life, and resilience were applied. The five-factor model had a poor data fit and lacked discriminant validity. The sample was divided. In a subsample of 316 participants, exploratory factor analysis suggested a four-factor model. When testing the four-factor model through confirmatory factor analysis, religious support was independent of family support, friend support, and lack of support. In the other subsample of 317 participants, the one-factor model for religious support had a good fit, and the correlated three-factor model, with the remaining factors, showed an acceptable fit. Reliability ranged from acceptable (Guttman's λ2 = 0.72) to good (λ2 = 0.88). Socio-family support and its three factors were correlated with family functioning, resilience, and quality of life. Religious support was correlated with four factors of resilience and quality of life. A scale of socio-family support with three factors and an independent scale for religious support are defined from the SSNS, and they showed internal consistency and construct validity.

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Suicide rates in Mexico have increased and have more than doubled in the state of Aguascalientes over the past 10 years. Few studies have been able to control for family, neighborhood, and occupational environment factors that may confound the association between psychosocial characteristics and suicidal behavior. We study suicidal behavior among adolescents and young adults in Mexico utilizing epidemiologic research strategies to overcome prior research deficiencies. In a case-control study with youth and adults 14-42 years of age, recent cases of severe suicidal behavior (n = 150) were individually matched with up to three controls who had never had a suicidal attempt by age and sex, as well as within familial, neighborhood, and occupational contexts (n = 353). Data were collected through standardized face-to-face interviews to measure suicidal behavior and several covariates, including family relations, psychological resources, hopelessness, depression, self-esteem, stress, impulsivity, anxiety, and substance use. All measures demonstrated good to excellent precision and accuracy. Compared with their matched controls, cases perceived life events as more stressful and had worse depression and familial relationships; poorer development of affective, religious, and social resources; higher levels of hopelessness and impulsive behavior; and lower self-esteem. Evidence from multivariate analysis suggests highly probable MDE combined with low self-esteem and the use of two or more drugs in the past month more clearly differentiate cases and controls and, therefore, may best predict suicidal attempt among adolescents and young adults in Aguascalientes, Mexico.

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El rasgo de Búsqueda de Sensaciones (BS) se puede entender como la necesidad de sensaciones y experiencias nuevas, variadas y complejas, y el deseo de arriesgarse con el fin de obtenerlas. Este rasgo se asocia con un mayor riesgo de realizar conductas peligrosas y con diferentes trastornos mentales. Sin embargo, en México no se conoce el comportamiento de la escala más utilizada para evaluar la BS cuando se utiliza en adolescentes. Por ello, el objetivo de la presente investigación es estudiar las propiedades psicométricas de la Escala Búsqueda de Sensaciones ­ Forma V (Sensation Seeking Scale ­ Form V), analizando su consistencia interna, su validez convergente y fiabilidad considerando la naturaleza dicotómica de los datos. Participaron 334 estudiantes de secundaria, con edades comprendidas entre 12 y 15 años tanto mujeres (n=171) como hombres (n = 163). En los resultados se identificaron 20 ítems que se distribuían en tres factores mediante un análisis factorial exploratorio que se calculó con la mitad de la muestra. Esta estructura mostró un ajuste adecuado en el análisis confirmatorio que se realizó con la otra parte de la muestra (χ2 = 213.78, gl = 167, p < 0.05, CFI = 0.93, TLI = 0.91, RMSEA = 0.04). Se calcularon los índices de fiabilidad (KR = 0.78, Omega = 0.94), se encontraron correlaciones con la escala de impulsividad (r = .39), la escala de uso de sustancias (r =.31 ) y con depresión (r = .26 ). Tanto en la escala total como en los factores se observaron mayores puntuaciones en hombres que en mujeres

The Sensation Seeking (SS) trait is conceived as the need for new, varied and complex sensations and experiences, and the desire to take risks in order to experience them. The trait is associated with a higher risk of dangerous behaviors and with different mental disorders. However, in Mexico, the performance of the scale most used to assess BS when used in adolescents is not known. For this reason, the objective of this research is to study the psychometric properties of the Sensation Seeking Scale - Form V (Sensation Seeking Scale - Form V), its internal consistency, its convergent validity and reliability considering the dichotomous nature of the data. 334 high school students participated, aged between 12 and 15 years, both women (n = 171) and men (n = 163). Results: 20 items were identified that were distributed in three factors through an exploratory factor analysis that was calculated with half of the sample This structure showed an adequate fit in the confirmatory analysis that was carried out with the other part of the sample

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Abstract Resilience implies a process of positive adjustment to adverse conditions. The growing interest in their study demands the need for valid and reliable measurement instruments that allow assessments with scientific rigor in different types of populations. The aim of the present research was to analyze the psychometric properties of the Resilience Questionnaire for Children and Adolescents. 512 students from a high school of the University of Guadalajara, Mexico, participated. Exploratory factor analysis yielded a four-dimensional composition with 18 items than explain 61.18% of the variance, with an excellent level of reliability (a = .90). Through confirmatory factor analysis, the model was corroborated, presenting adequate levels of adjustment. Convergent validity was assessed using Rosenberg's Self-esteem Scale, obtaining significant positive correlations with the dimensions of resilience. The divergent validity was assessed through the Depression Scale of the Epidemiological Studies Center - Revised, showing significant negative correlations. Results and practical implications are discussed.

Resumo O estudo da resiliência, capacidade que implica um processo de adaptação positiva às condições de adversidade, passou por um crescente interesse nos últimos anos que demanda a necessidade de contar com instrumentos de medição válidos e confiáveis que permitam realizar avaliações com rigor científico em diferentes tipos de população. Por esse motivo, a presente pesquisa teve como objetivo analisar as propriedades psicométricas do Questionário de Resiliência para Crianças e Adolescentes com uma amostra de 512 estudantes do Ensino Médio preparatório da Universidade de Guadalajara, no México. Inicialmente, realizou-se uma análise fatorial exploratória que resultou em uma composição de quatro dimensões com 18 itens que explicam 61,18% da variância, com um nível de confiabilidade alto (a = .90), e uma análise fatorial confirmatória com a qual se corroborou o modelo, com níveis adequados de ajuste. Posteriormente, avaliou-se a validade convergente do instrumento com a Escala de Autoestima de Rosenberg, com a qual foram obtidas correlações positivas significativas com as dimensões da resiliência. E, por último, aplicou-se a validade divergente com a Escala de Depressão do Centro de Estudos Epidemiológicos (Revisada), com a qual foram encontradas correlações negativas significativas. Por fim, discutem-se os resultados e as implicações práticas.

Resumen El estudio de la resiliencia, capacidad que implica un proceso de adaptación positiva a condiciones de adversidad, ha tenido un creciente interés en los últimos años que demanda la necesidad de contar con instrumentos de medición válidos y confiables que permitan hacer evaluaciones con rigor científico en diferentes tipos de poblaciones. Por esta razón, la presente investigación tuvo como objetivo analizar las propiedades psicométricas del Cuestionario de Resiliencia para Niños y Adolescentes con una muestra de 512 estudiantes de una preparatoria de la Universidad de Guadalajara, México. Inicialmente, se realizó un análisis factorial exploratorio que arrojó una composición de cuatro dimensiones con 18 ítems que explican 61.18% de la varianza, con un nivel de confiabilidad alto (a = .90); y un análisis factorial confirmatorio con el que se corroboró el modelo, con niveles adecuados de ajuste. Posteriormente, se evaluó la validez convergente del instrumento con la Escala de Autoestima de Rosenberg, donde se obtuvieron correlaciones positivas significativas con las dimensiones de la resiliencia. Y, por último, se valoró la validez divergente con la Escala de Depresión del Centro de Estudios Epidemiológicos (Revisada), donde se encontraron correlaciones significativas negativas. Al final se discuten los resultados y las implicaciones prácticas.

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BACKGROUND: In the XXI century anxiety disorders have become the most prevalent in Mexico, excessive worry is one of the first features that allows its identification. Have a valid and reliable instrument to assess the pathological worry is essential to identify the disorder from the beginning. METHOD: The aim of this study was to analyze the psychometric properties of the Penn state worry questionnaire (PSWQ) in the four different versions used in clinical contexts in Spanish-speaking countries: the original scale (PSWQ-16), the direct form of the scale (PSWQ-16D) and two abbreviated versions (PSWQ-11 y PSWQ-8). A total of 2,267 participants were given those versions of the questionnaire. RESULTS: Our results suggest that the original scale (16 items) fits to two related factors model. However, the analysis of the PSWQ version with all the items in its direct form and short versions (11 and 8 direct items), together with other arguments indicate that it is more convenient to conceive a one dimensional construct. Besides high internal consistency and test-retest reliability, and adequate concurrent and discriminant validity. CONCLUSIONS: Results suggest use of the short versions (11 and 8 direct items) which shows a one-dimensional structure and the best goodness of fit indices. Results are discussed and future research are suggested.

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