0711 Subjective Age Affects Poor Sleep Quality

Poor sleep is prevalent among older adults. Approximately half of elderly have a complaint about their sleep. In addition to chronological age, subjective age has received as biopsychosocial marker that is related to poor mental and physical health, impaired cognition, and mortality. In this study, we aimed to examine whether subjective age is associated with sleep characteristics and quality. We included 2501 subject (mean age 47.92±16.36, male 49.46 %) from a nationwide, cross-sectional, and population-based survey of sleep and headache in Korean from September 2018 to December 2018. Experienced researcher employed by Gallup Korea conducted structured interviews using a questionnaire through door-to-door visit and face-to face interview. Subjects were asked to report, in years, how old they felt. The proportional discrepancy scores were calculated by follow formula: chronological age - subjective age/chronological age. Whereas a negative value indicates a younger subjective age, a positive value denotes an older subjective age. The total subjects were divided into two groups according to the proportional age discrepancy: younger or same, and older. The effect of subjective age on sleep quality was analyzed with controlling for chronological age, sex, anxiety, depression, insomnia, and daytime sleepiness. Of the sample, feeling younger, same, and older compared to their chronological age reported 65.9, 15.9, and 17.9 %, respectively. The distribution of men and women differ between two groups. The Generalized Anxiety Disorder-7 (GAD-7), Patient Health Questionnaire-9 (PHQ-9), Pittsburgh Sleep Quality Index (PSQI), Insomnia Severity Index (ISI), and Epworth Sleepiness Scale (ESS) scores kept significantly higher in the younger or same group than older group after adjusting for sex (GAD-7 1.11±2.13, 1.52±2.73, p=