Relationship between social support and 7-year trajectories of cognitive decline: results from the China Health and Retirement Longitudinal Study

配偶 医学 社会支持 认知功能衰退 人口学 纵向研究 老年学 健康与退休研究 认知 住所 中国 心理学 痴呆 精神科 地理 疾病 考古 病理 社会学 人类学 心理治疗师
作者
Yuran Wang,Xuanji Chen,Yaoyue Hu
出处
期刊:Journal of Epidemiology and Community Health [BMJ]
卷期号:77 (9): 578-586 被引量:2
标识
DOI:10.1136/jech-2022-219733
摘要

Background Social support is associated with cognitive function at an older age, but how distinct dimensions of social support affect trajectories of cognitive decline in older Chinese adults remains unclear. Methods Using longitudinal data (waves 1–4) from the China Health and Retirement Longitudinal Study, 7-year trajectories of cognitive decline by various social support markers, including family support, financial support, public support and perceived support, were estimated using latent growth curve modelling for adults aged 60 and over (N=6795). Results After adjusting for baseline sociodemographics, behaviours, body mass index and health conditions, all social support markers were associated with baseline cognitive function, except for living with spouse. Participants living with spouse experienced a slower cognitive decline (0.069 per year, 95% CI 0.006, 0.133) than those who were not. A faster cognitive decline was associated with co-residing with children (−0.053 per year, 95% CI −0.104, –0.003), receiving ≥¥5000 from children (−0.095 per year, 95% CI −0.179, –0.011), receiving financial support from others (−0.108 per year, 95% CI −0.208, –0.008) and perceived support (−0.068 per year, 95% CI −0.123, –0.013). When all markers were mutually adjusted for, the associations of living with spouse and receiving financial support from others with cognitive decline disappeared. Stratifying by rural–urban residence, medical insurance and meeting children 1–3 times per month were associated with a slower rate of cognitive decline in urban residents but not in rural residents. Conclusion Overall, our findings confirm that the effects of distinct domains of social support on cognitive decline vary. More equally good social security systems should be established in urban and rural China.
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