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Adaptación y estudio de propiedades métricas de un cuestionario de valoración del sueño para lactantes y preescolares / Adaptation and study of the measurement properties of a sleep questionnaire for infants and pre-school children

INTRODUCCIÓN: Aunque las alteraciones del sueño en lactantes y preescolares son comunes, no se dispone de un instrumento en español adecuadamente validado para su estudio. El Brief Infant Sleep Questionnaire (BISQ) es un cuestionario multidimensional bien establecido con este fin en el ámbito internacional. OBJETIVOS: Adaptar el BISQ al español y analizar su fiabilidad y validez. Explorar su viabilidad en el contexto asistencial y de investigación. Participantes y métodos: Se incluyeron niños de 3 a 30 meses de edad. La adaptación al español (BISQ-E) se efectuó mediante técnica bilingüe de retrotraducción y consenso, siguiendo las recomendaciones internacionales. Se evaluó la fiabilidad mediante análisis de los resultados del test-retest del BISQ-E y de la concordancia de las respuestas a 2formas de administración (autoadministración y entrevista clínica). La validez de constructo se estableció analizando su correlación con un diario de sueño. RESULTADOS: Participaron un total de 87 familias/niños. La correlación global test-retest en 60 sujetos fue de r = 0,848 (p < 0,001). El índice de kappa entre las 2 formas de administración fue de 0,939 (IC 95%: 0,858-1,00; p < 0,001).La correlación BISQ-E-diario de sueño se analizó en 27 familias/niños y fue estadísticamente significativa para las variables estudiadas: hora de acostarse (r = 0,731), horas de sueño nocturno (r = 0,726), horas de sueño diurno r = 0,867) y número de despertares nocturnos (r = 0,888) (p < 0,001). CONCLUSIONES: La adaptación española del BISQ presenta unas características de validez y fiabilidad adecuadas para la evaluación del sueño en lactantes y preescolares. Su utilización como instrumento clínico o para estudios de investigación clínico-epidemiológica resulta factible

INTRODUCTION: Although sleep disturbances in infants and toddlers are common, there is no suitable validated tool in Spanish to evaluate sleep disorders. The Brief Infant Sleep Questionnaire (BISQ) is a well-established multidimensional questionnaire widely used internationally. OBJECTIVES: To adapt the BISQ questionnaire to Spanish and analyse its reliability and validity. To explore its feasibility, both in the clinical context, and in epidemiological research. METHODS: Participants were parents of children between 3 and 30 months of age. The adaptation to Spanish (BISQ-E) was achieved by using both back translation and consensus, following the international guidelines.Reliability was determined by means of test-retest and measurement of agreement (Kappa value) between 2 forms of administration of the questionnaire (self-administration and clinical interview). Construct validity was established by analysing its correlation with a sleep diary. RESULTS: A total of 87 families/children participated. The test-retest reliability undertaken in 60 subjects was excellent; r = 0.848 (P<0.001). The kappa value was 0.939 (95% CI: 0.858-1.00, P<0.001).The agreement between BISQ-E and the sleep diary was analysed in 27 families/children, with statistically significant values being obtained for the following variables: bedtime (r = 0.731), hours of night sleep (r = 0.726), hours of daytime sleep (r = 0.867), and number of nocturnal awakenings (r = 0.888) (P < 0.001). CONCLUSIONS: The Spanish adaptation of the BISQ shows overall adequate validity and reliability for the evaluation of sleep in infants and pre-school children. Its use as a clinical tool, or for clinical-epidemiological research studies, is feasible

[Adaptation and study of the measurement properties of a sleep questionnaire for infants and pre-school children]. / Adaptación y estudio de propiedades métricas de un cuestionario de valoración del sueño para lactantes y preescolares.

INTRODUCTION: Although sleep disturbances in infants and toddlers are common, there is no suitable validated tool in Spanish to evaluate sleep disorders. The Brief Infant Sleep Questionnaire (BISQ) is a well-established multidimensional questionnaire widely used internationally. OBJECTIVES: To adapt the BISQ questionnaire to Spanish and analyse its reliability and validity. To explore its feasibility, both in the clinical context, and in epidemiological research. METHODS: Participants were parents of children between 3 and 30 months of age. The adaptation to Spanish (BISQ-E) was achieved by using both back translation and consensus, following the international guidelines.Reliability was determined by means of test-retest and measurement of agreement (Kappa value) between 2forms of administration of the questionnaire (self-administration and clinical interview). Construct validity was established by analysing its correlation with a sleep diary. RESULTS: A total of 87 families/children participated. The test-retest reliability undertaken in 60 subjects was excellent; r = 0.848 (P<0.001). The kappa value was 0.939 (95% CI: 0.858-1.00, P<0.001).The agreement between BISQ-E and the sleep diary was analysed in 27 families/children, with statistically significant values being obtained for the following variables: bedtime (r = 0.731), hours of night sleep (r = 0.726), hours of daytime sleep (r = 0.867), and number of nocturnal awakenings (r = 0.888) (P < 0.001). CONCLUSIONS: The Spanish adaptation of the BISQ shows overall adequate validity and reliability for the evaluation of sleep in infants and pre-school children. Its use as a clinical tool, or for clinical-epidemiological research studies, is feasible.