Pet ownership and cognitive frailty among Chinese rural older adults who experienced a social loss: Is there a sex difference?

Background: The loss of a spouse (widowed or divorced) is one of the most common forms of social loss in older adults. However, evidence is limited regarding whether social loss is associated with cognitive frailty. Maintaining pets has become increasingly popular. Despite its health benefits, little is known about whether pet ownership can buffer cognitive frailty in older adults facing social loss. Here, we examined the role of pet ownership in the relationship between social loss and cognitive frailty among males and females older adults living in rural China. Methods: A total of 2638 rural older adults were analysed. Binary logistic regression analyses were conducted to explore risk or protective factors associated with cognitive frailty. Participants were categorised into four groups according to social loss and pet ownership assessment: (i) no social loss + own pet, (ii) no social loss + no pet, (iii) social loss + own pet, and (iv) social loss + no pet. Binary logistic regression was also performed to examine the interaction effects of social loss and pet ownership on cognitive frailty stratified by sex. Results: Regardless of pet ownership, spousal loss was associated with cognitive frailty for men and women. Female participants who experienced loss without a pet had a significantly higher risk of cognitive frailty. However, we did not observe a significant association between pet ownership and cognitive frailty among men who experienced loss. Conclusions: Our findings highlight the buffering effect of pet ownership on cognitive frailty in older women experiencing social loss. This implies that targeted support for older adults of different sexes who experienced social losses may be effective in preventing cognitive frailty in rural China.