- Social isolation is associated with poor sleep quality in older adults.
- This is independent of the subjective feeling of loneliness and can be improved with social intervention.
Why this matters
- Nearly 50% of adults aged 55 years and older experience some form of sleep problem.
- Previous studies have not investigated the simultaneous associations of social isolation and loneliness with sleep quality in older adults.
- Longitudinal analysis of 639 participants with poor sleep quality from 1989 to 1996.
- Association of social isolation and/or loneliness with sleep quality at follow-up was evaluated.
- Sleep quality was assessed using Pittsburgh Sleep Quality Index (PSQI).
- Funding: None.
- Mean age of the study population was 66.14 years, and the mean PSQI score at follow-up was 4.7.
- Sleep quality was found to be inversely associated with both social isolation (P<.001) and loneliness (P<.011).
- After adjustments, participants with higher level of social isolation had poor sleep quality (incident rate ratio, 1.13; P<.01), whereas loneliness and sleep quality showed no significant association (P=.383).
- There was no significant interaction between isolation and loneliness (P=.45).
- Sleep quality was self-reported.