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Multicenter Study
. 2004 Oct 15;34(6):286-92.
doi: 10.1016/s0212-6567(04)79497-4.

[Design and validation of the questionnaire on Women's Sexual Function (WSF)]

[Article in Spanish]
F Sánchez  1 , M Pérez Conchillo, J J Borrás Valls, O Gómez Llorens, J Aznar Vicente, A Caballero Martín de Las Mulas
Affiliations
Multicenter Study

[Design and validation of the questionnaire on Women's Sexual Function (WSF)]

[Article in Spanish]
F Sánchez et al. Aten Primaria. .

Abstract
in English, Spanish

Objective: To design and validate a self-administered questionnaire to evaluate sexual function in women.

Design: Cross-sectional, multi-centre study.

Setting: Primary care, in 9 health centres of the Community of Valencia.

Participants: Women not at risk of sexual dysfunction, selected by consecutive sampling. Initial sample 600, valid sample 212.

Interventions: Questionnaire of 14 questions to be filled out in 5-10 minutes, designed by a committee of experts. The participants filled it out on two occasions (test and retest) with an interval of 4 weeks. Diagnostic assessment by a committee of observers.

Main measurements: Reliability between test and retest questions: - One to one: analysis of concordance: kappa index. Significant variations: 2 goodness of fit. - On the sum of replies: comparison of means (Wilcoxon) and subsequent analysis: intra-class correlation coefficient (ICC). Internal consistency: Cronbach's alpha. Validity of contents: consensus of experts. Inter-observer correlation: ICC and factor analysis.

Results: Reliability: one to one: Kappa from 0.597 to 0.743. 2 not significant (ns). Between total sums (Wilcoxon), ns (z=-0.312, P=.755) (95% confidence). ICC: r=0.9587 (95% CI, 0.9460-0.9685), significant correlation (99% confidence). Internal consistency: Cronbach's alpha test: 0.8954, retest: 0.8973. Inter-observer correlation: ICC: r=0.9498 (CI, 0.9386-0.9611) significant (confidence 99%). Factor analysis: groupings of items 9, 13, 14; 1, 2, 3, 10; 5, 6, 7, 8.

Conclusions: The questionnaire is stable, valid and reliable. It evaluates the stages of sexual response, initiative and degree of sexual communication. It collects data on sexual performance. It is useful for exploring and diagnosing sexual dysfunction.

Objetivo: Diseñar y validar un cuestionario autoadministrado evaluador de la función sexual en la mujer

Diseño: Estudio transversal y multicéntrico

Emplazamiento: Atención primaria. Realizado en 9 centros sanitarios de la Comunidad Valenciana

Participantes: Mujeres sin riesgo de disfunción sexual, seleccionadas por muestreo consecutivo. Muestra inicial: 600; muestra válida: 212

Intervenciones: Diseño del cuestionario, de 14 preguntas a cumplimentar en 5–10 min, por un comité de expertos. Las participantes lo realizan en 2 ocasiones (test y retest) con un intervalo de 4 semanas. Evaluación diagnóstica por un comité de observadores

Mediciones principales: Fiabilidad entre preguntas de test y retest: a) una a una, mediante análisis de concordancia con índice kappa. Variaciones significativas mediante la prueba de la χ2 de bondad de ajuste; b) de las sumas de respuestas: comparación de medias (Wilcoxon) y posterior análisis mediante el coeficiente de correlación intraclase (CCI). La consistencia interna se determinó con el α de Cronbach y para la validez de contenidos se consideraron el consenso de expertos, la correlación interobservadores (CCI) y el análisis factorial

Resultados: Fiabilidad entre preguntas una a una: kappa = 0,597–0,743; χ2 no significativa. Fiabilidad entre sumas totales (Wilcoxon): no significativa (z = -0,312; p = 0,755) (confianza del 95%). CCI: r = 0,9587 (intervalo de confianza del 95%, 0,9460–0,9685), correlación significativa (confianza del 99%). Consistencia interna: a de Cronbach en el test de 0,8954 y en el retest de 0,8973. Correlación interobservadores (CCI): r = 0,9498 (intervalo de confianza del 95%, 0,9386- 0,9611), significativa (confianza del 99%). Análisis factorial: agrupaciones de los ítems 9, 13 y 14; 1, 2, 3 y 10; 5, 6, 7 y 8

Conclusiones: El cuestionario es estable, válido y fiable. Evalúa las fases de la respuesta sexual, la iniciativa y el grado de comunicación sexual. Recoge datos descriptivos acerca del desempeño sexual y resulta útil en la exploración y el diagnóstico de las disfunciones sexuales

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