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Publication Detail
Four-year trajectories of episodic memory decline in mid-late life by living arrangements: a cross-national comparison between China and England
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Hu Y, Ruiz M, Bobak M, Martikainen P
  • Publisher:
    BMJ
  • Publication date:
    09/02/2021
  • Journal:
    Journal of Epidemiology and Community Health
  • Status:
    Published online
  • Print ISSN:
    0143-005X
  • Language:
    en
Abstract
BackgroundThere is mixed evidence on the association between living arrangements and mid-late life cognition, which may be due to distinct familial arrangements and preferences between populations. To address such heterogeneity, we assessed these associations in China and England.MethodsFour-year trajectories of episodic memory scores (0–20, word recall test) by living arrangements (living with partner only, living with partner and children/grandchildren, living with no partner but with children/grandchildren, and living alone) were estimated using latent growth curve modelling for men and women aged 50+ from China (n=12 801) and England (n=10 964).ResultsAfter adjusting for baseline socioeconomic, health behaviours and health covariates, worse baseline memory was found in Chinese adults living with no partner but with children/grandchildren and in Chinese women living with partner and children/grandchildren, compared with those living with partner only. Better baseline memory was associated with living alone in English women. A faster memory decline was found in Chinese men living with no partner but with children/grandchildren (−0.122 word/year, 95% CI −0.213 to –0.031), as well as in English women living with children/grandchildren with (−0.114, 95% CI −0.180 to –0.049) or without (−0.118, 95% CI −0.209 to –0.026) a partner, and those living alone (−0.075, 95% CI −0.127 to –0.024). No differences at baseline nor over follow-up were found between English men in different living arrangements.ConclusionOverall, our findings did not confirm the protective effects of co-residence with children/grandchildren, nor the detrimental effects of living alone on mid-late life cognition in China and England.
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