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Title: A workplace intervention improves sleep: results from the randomized controlled Work, Family, and Health Study
Citation Type: Journal Article
Publication Year: 2015
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Abstract: Study objectives The Work, Family, and Health Network Study tested the hypothesis that a workplace intervention designed to increase family-supportive supervision and employee control over work time improves actigraphic measures of sleep quantity and quality. Design Cluster-randomized trial. Setting A global information technology firm. Participants US employees at an information technology firm. Interventions Randomly selected clusters of managers and employees participated in a 3-month, social, and organizational change process intended to reduce work-family conflict. The intervention included interactive sessions with facilitated discussions, role playing, and games. Managers completed training in family-supportive supervision. Measurements and results Primary outcomes of total sleep time (sleep duration) and wake after sleep onset (sleep quality) were collected from week-long actigraphy recordings at baseline and 12 months. Secondary outcomes included self-reported sleep insufficiency and insomnia symptoms. Twelve-month interviews were completed by 701 (93% retention), of whom 595 (85%) completed actigraphy. Restricting analyses to participants with ≥ 3 valid days of actigraphy yielded a sample of 473-474 for intervention effectiveness analyses. Actigraphy-measured sleep duration was 8 min/d greater among intervention employees relative to controls (P < .05). Sleep insufficiency was reduced among intervention employees (P = .002). Wake after sleep onset and insomnia symptoms were not different between groups. Path models indicated that increased control over work hours and subsequent reductions in work-family conflict mediated the improvement in sleep sufficiency. Conclusions The workplace intervention did not overtly address sleep, yet intervention employees slept 8 min/d more and reported greater sleep sufficiency. Interventions should address environmental and psychosocial causes of sleep deficiency, including workplace factors.
Url: https://www.sciencedirect.com/science/article/abs/pii/S2352721814000047
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Authors: Olsen, Ryan; Crain, Tori, L; Bodner, Todd, E; King, Reseland
Periodical (Full): Sleep Health
Issue: 1
Volume: 1
Pages: 55-65
Data Collections: IPUMS USA
Topics: Fertility and Mortality, Labor Force and Occupational Structure, Work, Family, and Time
Countries: United States