Background Sleep problem is a common geriatric condition that can result in various outcomes, both physical and mental, that reduce quality of life. The studies regarding the prevalence and impact of insomnia on daily activities in Thailand in pre-elderly and elderly adults are few. Objectives The primary objective of this study was to determine the prevalence of insomnia among pre-elderly and elderly populations and the secondary objective was to study the impact of insomnia on their daily lives. Methods This study included the participants from the urban middle class in the pre-retirement age of 50 years or older adults who worked for Khon Kaen University (KKU), Khon Kaen, Thailand, and their elderly relatives. Information on baseline characteristics, sleep problems, and outcomes were collected. Descriptive analytical statistics were used to analyze baseline data. Multivariate analysis was used to analyze associated factors of the impact of insomnia. Results A total of 491 participants were recruited. The prevalence of insomnia was 60%. The significant consequences related to insomnia were feeling unrefreshed (adjusted odds ratio (AOD) 2.22, 95% confidence interval (CI) 1.44-3.04), daytime sleepiness (AOD 2.04, 95% CI 1.29-3.22), need for a sedative drug (AOD 4.23, 95% CI 2.09-8.55), depression (AOD 4.74, 95% CI 1.73-13), and impaired attention (AOD 2.29, 95% CI 1.52-3.45). Conclusions Insomnia was found in the majority of pre-elderly and elderly participants and resulted in several poor outcomes. Early detection of insomnia may prevent some inevitable outcomes.
Keywords: insomnia; outcome of insomnia; prevalence of insomnia; sleep problem.