• Medicina intensiva · Aug 2020

    Psychometric evaluation of the Freedman questionnaire to assess sleep in critical patients.

    • M D Bernat Adell, Bisbal AndrésEEServicio de Medicina Intensiva, Hospital General Universitario de Castellón, Castellón, España., L Galarza Barrachina, G Cebrián Graullera, G Pages Aznar, A Melgarejo Urendez, M A Morán Marmaneu, A Monfort Lázaro, and M D Ferrandiz Selles.
    • Unidad Predepartamental de Enfermería, Universitat Jaume I, Castellón, España. Electronic address: bernatm@uji.es.
    • Med Intensiva. 2020 Aug 1; 44 (6): 344-350.

    AimA study was made of the psychometric characteristics of the modified Freedman questionnaire to assess sleep in critical patients.DesignA 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.SettingThe Department of Intensive Care Medicine of a reference hospital.ParticipantsPatients admitted between 23 February 2016 and 20 December 2017.InterventionsQuestionnaire administration.VariablesItems of the modified Freedman questionnaire.ResultsItem 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.ConclusionsThe 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.Copyright © 2019 Elsevier España, S.L.U. y SEMICYUC. All rights reserved.

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