ABSTRACT
OBJETIVO: Evaluar las características psicométricas del cuestionario Freedman modificado para la valoración del sueño en el paciente crítico. DISEÑO: Estudio psicométrico. Se exploró la validez de contenido mediante un grupo de expertos y la consistencia interna fue evaluada mediante el coeficiente alfa de Cronbach. Se realizó un análisis factorial para evaluar la validez de constructo; la estabilidad fue medida con análisis test-retest mediante el índice de correlación intraclases. Ámbito: Servicio de Medicina Intensiva de un hospital de referencia. PARTICIPANTES: Pacientes ingresados entre el 23 de febrero de 2016 y el 20 de diciembre de 2017. INTERVENCIONES: Administración de un cuestionario. VARIABLES: Ítems del cuestionario Freedman modificado. RESULTADOS: La pertinencia de los ítems y su definición obtuvieron valores superiores a 3, en una escala tipo Likert con valor máximo de 4 puntos. El alfa de Cronbach indicó un valor global de 0,933. El índice de correlación intraclases obtuvo valores superiores a 0,75 en la mayoría de los ítems del cuestionario. El análisis factorial obtuvo asociación entre las variables analizadas y los 4 factores. CONCLUSIONES: El cuestionario Freedman modificado presentó unas buenas características psicométricas. Puede resultar un instrumento fiable para evaluar la calidad del sueño en el paciente crítico, así como los factores ambientales relacionados
AIM: A study was made of the psychometric characteristics of the modified Freedman questionnaire to assess sleep in critical patients. DESIGN: A psychometric study was carried out, with content validity being explored by a group of experts, and internal consistency based on Cronbach's alpha coefficient. Factor analysis was performed to explore construct validity, and stability was assessed by test-retest analysis. SETTING: The Department of Intensive Care Medicine of a reference hospital. PARTICIPANTS: Patients admitted between 23 February 2016 and 20 December 2017. INTERVENTIONS: Questionnaire administration. VARIABLES: Items of the modified Freedman questionnaire. RESULTS: Item relevance and definition yielded scores > 3 (Likert scale maximum = 4). Cronbach's alpha showed a global value of 0.933. The intraclass correlation index was > 0.75 for most of the items of the questionnaire. Factor analysis allowed the detection of specific associations between the studied variables and the four factors. CONCLUSIONS: The modified Freedman questionnaire showed good psychometric characteristics. It may be a reliable instrument for assessing the quality of sleep in critically ill patients, as well as the environmental factors
Subject(s)
Humans , Male , Female , Middle Aged , Aged , Psychometrics/methods , Critical Care/psychology , Sleep Wake Disorders/psychology , Sleep Wake Disorders/diagnosis , Surveys and Questionnaires , Factor Analysis, Statistical , Sleep Deprivation/psychologyABSTRACT
AIM: A study was made of the psychometric characteristics of the modified Freedman questionnaire to assess sleep in critical patients. DESIGN: A psychometric study was carried out, with content validity being explored by a group of experts, and internal consistency based on Cronbach's alpha coefficient. Factor analysis was performed to explore construct validity, and stability was assessed by test-retest analysis. SETTING: The Department of Intensive Care Medicine of a reference hospital. PARTICIPANTS: Patients admitted between 23 February 2016 and 20 December 2017. INTERVENTIONS: Questionnaire administration. VARIABLES: Items of the modified Freedman questionnaire. RESULTS: Item relevance and definition yielded scores >3 (Likert scale maximum=4). Cronbach's alpha showed a global value of 0.933. The intraclass correlation index was >0.75 for most of the items of the questionnaire. Factor analysis allowed the detection of specific associations between the studied variables and the four factors. CONCLUSIONS: The modified Freedman questionnaire showed good psychometric characteristics. It may be a reliable instrument for assessing the quality of sleep in critically ill patients, as well as the environmental factors.
