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Same-Sex Couples and Cognitive Impairment: Evidence From the Health and Retirement Study.
Liu H, Hsieh N, Zhang Z, Zhang Y, Langa KM. Same-Sex Couples and Cognitive Impairment: Evidence From the Health and Retirement Study. The journals of gerontology. Series B, Psychological sciences and social sciences. 2021 Aug 13; 76(7):1388-1399.
We provide the first nationally representative population-based study of cognitive disparities among same-sex and different-sex couples in the United States.
We analyzed data from the Health and Retirement Study (2000-2016). The sample included 23,669 respondents (196 same-sex partners and 23,473 different-sex partners) aged 50 and older who contributed to 85,117 person-period records (496 from same-sex partners and 84,621 from different-sex partners). Cognitive impairment was assessed using the modified version of the Telephone Interview for Cognitive Status. Mixed-effects discrete-time hazard regression models were estimated to predict the odds of cognitive impairment.
The estimated odds of cognitive impairment were 78% (p < .01) higher for same-sex partners than for different-sex partners. This disparity was mainly explained by differences in marital status and, to a much lesser extent, by differences in physical and mental health. Specifically, a significantly higher proportion of same-sex partners than different-sex partners were cohabiting rather than legally married (72.98% vs. 5.42% in the study sample), and cohabitors had a significantly higher risk of cognitive impairment than their married counterparts (odds ratio = 1.53, p < .001).
The findings indicate that designing and implementing public policies and programs that work to eliminate societal homophobia, especially among older adults, is a critical step in reducing the elevated risk of cognitive impairment among older same-sex couples.