ArticleThe journals of gerontology. Series A, Biological sciences and medical sciences2026
Wife-husband differences in the associations between sleep durations and global cognition among middle-aged and older married couples in China: a longitudinal dyadic analysis.
Article in The journals of gerontology. Series A, Biological sciences and medical sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
backgroundSleep duration has well-established U-shaped associations with cognitive health, but research has largely ignored spousal interdependence. This study examined actor and partner effects of sleep duration on global cognition in middle-aged and older Chinese couples, testing whether associations differed by sex.
methodsData were drawn from CHARLS waves 1-4 (2011-2018). The analytical sample comprised 4260 couples (8520 individuals) aged ≥45 years living in a married, 2-person, mixed-sex household. Global cognition was assessed with a composite battery adapted from the Telephone Interview for Cognitive Status and Chinese Mini-Mental State Examination; nocturnal sleep and napping durations were self-reported. Actor-Partner Interdependence Models with quadratic terms examined actor effects (own sleep predicting own cognition) and partner effects (own sleep predicting spouse's cognition), with false discovery rate (FDR)-adjusted q-values and sex-equality tests.
resultsSignificant inverted U-shaped actor effects were found for wives (β = -0.010, 95% CI: -0.014, -0.005, p < .001) and husbands (β = -0.011, 95% CI: -0.016, -0.006, p < .001); both survived FDR correction (q = 0.002, q < 0.001). Husbands' sleep was nominally associated with wives' cognition similarly (β = -0.005, p = .025), while wives' sleep was not associated with husbands' cognition (p = .618). The husband-to-wife association did not survive FDR correction (q = 0.239), and sex-equality tests were non-significant (χ²(9) = 9.35, p = .406). Napping showed limited, largely non-significant associations with cognition.
conclusionsOwn nocturnal sleep duration shows a robust, symmetric inverted U-shaped association with cognitive function in both spouses. The possible husband-to-wife partner effect did not survive correction for multiple testing and warrants adequately powered investigation before informing couple-based clinical recommendations.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.