The association between subjective–objective discrepancies in sleep duration and mortality in older men

Author:

Utsumi Tomohiro,Yoshiike Takuya,Kaneita Yoshitaka,Aritake-Okada Sayaka,Matsui Kentaro,Nagao Kentaro,Saitoh Kaori,Otsuki Rei,Shigeta Masahiro,Suzuki Masahiro,Kuriyama Kenichi

Abstract

AbstractA discrepancy in subjective and objective estimations of sleep duration, which often diverge, could have long-term adverse effects on health outcomes in older adults. Using data from 2674 older adult men (≥ 65 years of age) of the Osteoporotic Fractures in Men Sleep Study, we assessed the longitudinal association between misperception index (MI), calculated as MI = (objective sleep duration – subjective sleep duration)/objective sleep duration, and all-cause mortality. During the follow-up with a mean (standard deviation) of 10.8 (4.2) years, 1596 deaths were observed. As a continuous variable, MI showed a linear relationship with all-cause mortality after adjusting for multiple covariates, including polysomnography-measured objective sleep duration [fully adjusted hazard ratio (HR), 0.69; 95% confidence interval [CI], 0.56–0.84]. As a categorical variable, the lowest MI quartile (vs. the interquartile MI range) was associated with increased mortality (fully adjusted HR, 1.28; 95% CI, 1.12–1.46), whereas the highest MI quartile was not associated with mortality (fully adjusted HR, 0.97; 95% CI, 0.85–1.11). The subjective overestimation of sleep duration may be a risk factor for all-cause mortality in older men. Future studies should examine why subjective overestimation of sleep duration is associated with all-cause mortality from a physiological perspective.

Funder

The Ministry of Health, Labor and Welfare, Government of Japan

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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