Background There 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.

Methods Four-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).

Results After 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.

Conclusion Overall, 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.

Background: While living alone predicts depression in diverse ageing populations, the impact of multi-generational living is unclear. This study compared mid-late life depressive symptoms by living arrangements between societies with distinct kinship ties.

Methods: Repeated data on depressive symptoms and living arrangements over 4 years from 16,229 Chinese (age >= 45) and 10,403 English adults (age >= 50) were analyzed using multilevel mixed-effects logistic regression. Elevated depressive symptoms were identified using the Center for Epidemiological Depression Scale criteria in each study.

Results: Higher odds ratios (ORs) of elevated depressive symptoms were found in both Chinese and English adults aged<60 living with no partner but with children/grandchildren, compared to those living with a partner only. These ORs were greater for men (Chinese men: 3.09, 95% confidence interval: 2.00-4.78; English men: 3.44, 1.36-8.72) than for women (Chinese women: 1.77, 1.23-2.56; English women: 2.88, 1.41-3.67), after controlling for socioeconomic position, health behaviors, and health status. This male disadvantage was also observed for English, but not for Chinese, adults aged<60 living alone. For adults aged 60+, the increased odds among those living with no partner but with children/grandchildren and those living alone were smaller in both countries.

Limitations: Bias may exist because depressed participants are more likely to experience divorce or separation prior to baseline.

Conclusions: The relationship between living arrangements and depressive symptoms appears robust and consistent across social contexts, although the mechanisms differ. The protective role of partners in both China and England supports targeting those who do not live with partners to reduce depression.

Background Despite the growing prevalence of depression in the Chinese elderly, there is conflicting evidence of life course socioeconomic position (SEP) and depression onset in China, and whether this association is akin to that observed in Western societies. We compared incident risk of mid-late life depression by childhood and adulthood SEP in China and England, a country where mental health inequality is firmly established. Methods Depression-free participants from the China Health and Retirement Longitudinal Study (N=8508) and the English Longitudinal Study of Ageing (N=6184) were studied over 4 years. Depressive symptoms were classified as incident cases using the Center for Epidemiologic Studies Depression Scale criteria. Associations between SEP (education, wealth, residence ownership and childhood/ adolescent deprivation) and depression symptom onset were assessed using Cox proportional hazards models. In China, we also investigated children's government employment status as a SEP marker. Results Higher education and wealth predicted lower incidence of depression in both countries. The association with non-ownership of residence appeared stronger in England (HR 1.61, 95% CI 1.41 to 1.86) than in China (HR 1.11, 95% CI 0.95 to 1.29), while that with childhood/adolescent deprivation was stronger in China (HR 1.43, 95% CI 1.29 - 1.60) than in England (HR 1.33, 95% CI 0.92 to 1.92). Chinese adults whose children were employed in high-status government jobs, had lower rates of depression onset. Conclusions Consistent findings from China and England demonstrate that SEP is a pervasive determinant of mid-late life depression in very diverse social contexts. Together with conventional measures of SEP, the SEP of children also affects the mental health of older Chinese.