0916 Evaluation of Sleep Misperception Spectrum: Frequencies And Associated Factors in EPISONO Cohort. (27th April 2018)

• Record Type: Journal Article
• Authors: Kim, L J; Bittencourt, L; Tufik, S; Andersen, M L
• Is Part Of: Sleep. Volume 41(2018)Supplement 1
• Page Start: A340
• Page End: A340
• Publication Date: 2018-04-27
• Subjects: Sleep -- Physiological aspects -- Periodicals; Sleep disorders -- Periodicals; Sommeil -- Aspect physiologique -- Périodiques; Sommeil, Troubles du -- Périodiques; Sleep disorders; Sleep -- Physiological aspects; Sleep -- physiological aspects; Sleep Wake Disorders; Psychophysiology; Electronic journals; Periodicals; 616.8498
• DOI: 10.1093/sleep/zsy061.915
• Languages: English
• ISSNs: 0161-8105

Abstract

Abstract: Introduction: Sleep misperception is a common and well-known condition that can influence sleep studies. Few evidences addressed the frequency and associated factors of the entire sleep misperception spectrum. We aimed to evaluate the frequency and predictive factors of individuals with accurate sleep estimation, underestimators, and overestimators in a representative sample of Sao Paulo city, Brazil. Methods: This was a cross-sectional investigation with the data provided by EPISONO cohort. A total sample of 971 participants of 20–80 years-old were included in the study. Sleep misperception classification as accurate, underestimators, and overestimators were performed according to the subjective sleep ratio values. Sleep, clinical, psychological, and biochemical parameters were compared among the groups. Results: A mean objective total sleep time of 342 ± 2.4 min and subjective of 391.6 ± 2.9 min were observed, with a sleep discrepancy of 4.8 min and a misperception index of -0.04 min. Underestimators and overestimators composed 28.8% and 35.6% of the sample, respectively. Early morning awakening insomnia was associated with a 2.67-fold increased risk of negative sleep misperception. C-reactive protein level predicted a 2-fold increased risk of overestimation of sleep time. Conclusion: Different spectra of sleep misperception show distinct associations with sleep and biochemical parameters. Our findings indicated that overestimation of sleep time may be related to a proinflammatory state, suggesting that patients with positive sleep misperception could be a high-risk population for medical conditions. Support (If Any): Our study was supported by grants from the Associacao Fundo de Incentivo à Pesquisa (AFIP) and Sao Paulo Research Foundation (FAPESP, #2015/19136-5 to LJK). MLA and LB are CNPq fellowship recipients.