title: Validation of the Chinese Version of the Functional Outcomes of Sleep Questionnaire-10 in Pregnant Women.
abstract: We evaluated the psychometric properties of a Mandarin Chinese version of the Functional Outcomes of Sleep Questionnaire-10 (FOSQ-10) in pregnant women. A total of 228 first-trimester pregnant women participated in the study, which was conducted in an outpatient obstetric clinic at a medical center in Taipei, Taiwan. The Chinese version of the FOSQ-10 demonstrated satisfactory internal consistency (Cronbach alpha = .85), adequate corrected item-total correlations (from .40 to .67), and acceptable test-retest reliability over 7 days (ICC = .73). Construct validity was supported by exploratory factor analysis showing a one-factor structure with item loadings between .49 and .77. Significant associations with the Medical Outcomes Study Short-Form Health Survey 12 version 2 and Pittsburgh Sleep Quality Index supported criterion-related and convergent validity. Significant differences in the Chinese version of the FOSQ-10 total scores were found between women with clinically significant daytime sleepiness and those without, suggesting adequate discriminant validity. Ceiling effects were observed for all items, but no floor or ceiling effects were found for total scores. Findings suggest that the Chinese version of the FOSQ-10 is a valid and reliable instrument to identify important effects of sleep-related impairment in Chinese women during pregnancy. Further testing is needed in more diverse pregnant women, such as women with complicated pregnancies and those with sleep disorders. © 2016 Wiley Periodicals, Inc.
authors.affiliation: Associate Professor, School of Nursing, National Taiwan University, No. 1, Sec. 1, Jen-Ai Rd., Taipei, Taiwan, 10051.
authors.forename: Shao-Yu
authors.initials: SY
authors.lastname: Tsai
authors.affiliation: Associate Professor, School of Nursing, National Taiwan University, Taipei, Taiwan.
authors.forename: Shiow-Ching
authors.initials: SC
authors.lastname: Shun
authors.affiliation: Assistant Professor, Department of Internal Medicine, National Taiwan University, Director, Center of Sleep Disorder, Attending Physician, Division of Pulmonary and Critical Care Medicine, National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Pei-Lin
authors.initials: PL
authors.lastname: Lee
authors.affiliation: Professor, Department of Obstetrics and Gynecology, National Taiwan University, Taipei, Taiwan.
authors.forename: Chien-Nan
authors.initials: CN
authors.lastname: Lee
authors.affiliation: Dean and Professor, College of Nursing, University of Illinois at Chicago, Chicago, IL.
authors.forename: Terri E
authors.initials: TE
authors.lastname: Weaver
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D011247:Pregnancy; D011446:Prospective Studies; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D012890:Sleep; D011795:Surveys and Questionnaires; D013624:Taiwan
keywords: fatigue; functional status; pregnancy; psychometric validation; quality of life; sleep; sleepiness