Value labels of categorical variables: IV = Independent variable; M = mediator; Adj R2 = Adjusted R2; DV = Dependent variable; Age group (1 = 65–74, 2 = 75 and older); gender (1 = male, 2 = female); marital status (1 = has partner, 2 = no partner); ns = not significant. * p < 0.05. ** p < 0.01. *** p < 0.001.