Do Neuroticism and Conscientiousness Interact with Health Conditions in Predicting 4-Year Changes in Self-Rated Health among Swedish Older Adults?
Health conditions such as higher disease burden, pain or lower functional health are associated with poorer self-rated health (SRH). Whether these associations are moderated by psychosocial factors such as personality traits has rarely been investigated so far. In the present pre-registered analyses, we used five annual waves of the Health, Aging and Retirement Transitions in Sweden (HEARTS) study (n = 5,823, M(age) = 63.09, SD = 2.01) to investigate effects of personality (neuroticism and conscientiousness) and physical health indices (disease burden, pain, functional limitations), as well as their interaction, on levels and change in SRH. Higher neuroticism and lower conscientiousness were related to lower levels of SRH. These associations remained significant when controlling for the health indices. However, personality was not significantly related to change in SRH after controlling for the health indices, and personality did not moderate the effect of health indices on levels and change in SRH. When taking change in health indices into account, we found that increases in pain and functional limitations were more strongly associated with declines in SRH for those with high neuroticism. Our findings suggest that higher neuroticism may impair the ability to cope with increasing pain and functional limitations in later life.