ArticleBJPsych open2026
The impact of bedtime alignment on sleep health in older couples: gender-sensitive analysis.
Article in BJPsych open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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20 authors.
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Abstract
backgroundAlthough most couples share a bed, current interventions rarely consider dyadic sleep patterns.
aimsWe investigated whether bedtime alignment between partners affects longitudinal sleep outcomes in older couples, with particular attention to gender differences.
methodBased on the temporal relationship between partners' bedtimes and the earlier sleeper's sleep onset latency, 859 couples (1718 individuals) aged ≥60 years were classified into 5 mutually exclusive bedtime alignment groups. Pittsburgh Sleep Quality Index (PSQI) scores, sleep onset latency and sleep efficiency were compared using analysis of variance and multivariate analysis of covariance. Both cross-sectional and 8-year longitudinal trajectory analyses were conducted.
resultsBedtime alignment significantly affected sleep outcomes (
conclusionsBedtime alignment represents a modifiable determinant of sleep health in older couples, with synchronised bedtimes providing optimal outcomes and partial sleep onset overlap creating disruption. This particularly benefits women, who show progressive deterioration with misalignment. These findings support the development of gender-informed, couple-based interventions for sleep disorders.
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