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Background/Objective The most recent versions of the two main mental disorders classifications—the World Health Organization's ICD-11 and the American Psychiatric Association's DSM–5—differ substantially in their diagnostic categories related to transgender identity. ICD-11 gender incongruence (GI), in contrast to DSM-5 gender dysphoria (GD), is explicitly not a mental disorder; neither distress nor dysfunction is a required feature. The objective was compared ICD-11 and DSM-5 diagnostic requirements in terms of their sensitivity, specificity, discriminability and ability to predict the use of gender-affirming medical procedures. Method A total of 649 of transgender adults in six countries completed a retrospective structured interview. Results Using ROC analysis, sensitivity of the diagnostic requirements was equivalent for both systems, but ICD-11 showed greater specificity than DSM-5. Regression analyses indicated that history of hormones and/or surgery was predicted by variables that are an intrinsic aspect of GI/GD more than by distress and dysfunction. IRT analyses showed that the ICD-11 diagnostic formulation was more parsimonious and contained more information about caseness than the DSM-5 model. Conclusions This study supports the ICD-11 position that GI/GD is not a mental disorder; additional diagnostic requirements of distress and/or dysfunction in DSM-5 reduce the predictive power of the diagnostic model.

Introduction: In Mexico, neither the 36-item Short Form Health Survey (SF-36) nor the Bariatric Analysis and Reporting Outcome System (BAROS) instruments have been used to assess quality of life (QoL) before and after bariatric surgery (BS). Objective: To describe changes in QoL using the SF-36 and BAROS questionnaires in patients with severe obesity before and after BS. Methods: Clinical and anthropometric data of patients undergoing bariatric surgery between 2015 and 2016 were collected. Statistical significance was considered with a p-value < 0.05. Results: 230 patients were analyzed, 98 before and 132 and after BS; most were females (81 %). Initial body mass index was 48 kg/m 2 (44-53). SF-36-measured QoL showed an increase in the physical component score from 43 to 54.2 points (p < 0.001), and in the mental component, from 53.3 to 56.6 points after BS. With BAROS, 98.5 % showed good to excellent QoL results within the first three months after BS. Conclusion: When measured with the SF-36 and BAROS questionnaires, QoL of Mexican patients with severe obesity was found to improve after BS.

SUMMARYExcessive daytime sleepiness (EDS) is a highly disabling sleep disorder related to alterations in behavioral performance, work injuries and vehicle accidents. A high prevalence of EDS (from 16% to 32%) in the general population has been reported. The Functional Outcomes Sleep Questionnaire (FOSQ) is an instrument that measures the impact of EDS in a patient´s functional state in different sleep disorders. This questionnaire has been validated in different countries (Norway, Turkey, Spain). Therefore, the objective of this study was to obtain the cultural validation, the internal consistency, construct validity and factor congruence of the adapted questionnaire for the inhabitants of Mexico City (FOSQ-México). In the first part of the study we translated the questionnaire using the standard methodological process. The FOSQ cultural adaptation was made by the Natural Modified Semantic Networks technique in a sample of 78 participants. In the second part, the adapted FOSQ was applied to 152 participants to test items discrimination, internal consistency, factor analysis by principal-components and factorial congruence with the original version. The principal-components analysis of the FOSQ yielded six meaningful factors that explained 67.2% of the total variance, an average  coefficient between 0.85 to 0.94 for the six factors. The factorial congruence coefficients ranged from 0.360 to 0.969 between the original and the FOSQ-México version. This study demonstrated that the FOSQ version for inhabitants of Mexico City is reliable, valid and conceptually equivalent to the American version.Key words: Functional Outcomes Sleep Questionnaire, reliability, validity, excessive daytime sleepiness, sleep disorders, functional status. RESUMENLa Somnolencia Diurna Excesiva (SDE) es uno de los problemas de sueño más incapacitantes ya que se relaciona con déficits en la ejecución conductual, accidentes laborales y vehiculares. Se estima una prevalencia en la población general de entre 16% y 32%. El Functional Outcomes Sleep Questionnaire (FOSQ) es el cuestionario más utilizado para medir el impacto de la SDE en el estado funcional de pacientes con diferentes trastornos del dormir, el cual se ha validado en distintos países. Por lo tanto, el objetivo de este estudio fue adaptar culturalmente el FOSQ y obtener la confiabilidad, la validez de constructo y los coeficientes de congruencia factorial para la versión FOSQ-México. En una primera fase se tradujo el cuestionario utilizando el procedimiento metodológico estándar. También se hizo la adaptación cultural de los reactivos mediante la técnica de Redes Semánticas Naturales Modificadas en una muestra de 78 participantes. En una segunda fase, el cuestionario adaptado se aplicó a 152 participantes para determinar la discriminación entre reactivos, la consistencia interna, el análisis factorial con rotación ortogonal con un método de componentes principales y comprobar la congruencia factorial. Los resultados indicaron que los 30 reactivos del FOSQ se agruparon en seis factor...

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