Longitudinal association between perceived stress and depression among community-dwelling older adults: Findings from the Irish Longitudinal Study on Ageing

Older adults may be particularly vulnerable to the negative effects of stress on depression. However, the impact of perceived stress on late-life depression is understudied in large community samples. Thus, the present study used data from a population-based sample of Irish older adults to examine the longitudinal association between perceived stress and late-life depression.

Data from Wave 1 (2009-2011) and Wave 2 (2012-2013) of the Irish Longitudinal Study on Ageing (TILDA) were analyzed. Depression was assessed with the Center for Epidemiologic Studies Depression (CES-D), while the 4-item version of the Perceived Stress Scale was used for perceived stress. Multivariable logistic regression was used to assess the association between perceived stress (exposure) and depression (outcome).

The analytical sample consisted of 5238 individuals aged ≥50 years [mean (SD) age 63.2 (9.1) years; 49.4% females] who did not have depression at Wave 1. The mean perceived stress score at baseline was much lower among those who did not develop depression at Wave 2 compared to those who did (3.85 vs. 6.33). Compared to those in the lowest quartile of levels of perceived stress at baseline, those in the highest quartile had 2.65 (95%CI=1.56-4.49) times higher risk for depression onset.

Some baseline information including that of perceived stress could have changed within the two-year follow-up period.

Greater levels of perceived stress at baseline was associated with higher risk for depression onset at two-year follow-up among older adults in Ireland. Individualized interventions addressing stress may be beneficial in the prevention of depression among older adults.