Optimism and pessimism as predictors of work disability with a diagnosis of depression: A prospective cohort study of onset and recovery

Kronström, Kim et al. (2011). Journal of Affective Disorders,130 (1-2): 294-299

Personality characteristics are assumed to affect to the vulnerability to depression and its outcomes. The aim of this study was to examine optimism and pessimism as predictors of depression-related work disability and subsequent return to work. Methods: We conducted a prospective cohort study of 38,214 public sector employees with no record of diagnosed depression. Optimism and pessimism were measured using the Revised Life Orientation Test (LOT-R). Records of long-term (> 90 days) work disability with a diagnosis of depression and subsequent return to work until the end of 2005 were obtained from the national health registers. Results: During the mean follow-up of 4.0 (SD = 2.3) years, 287 employees encountered work disability with a diagnosis of depression. Of them, 164 (57%) returned to work during the follow-up. One unit increase in the optimism mean score (range 1–4) was associated with a 25% lower risk of work disability due to depression and a 37% higher probability of returning to work after a work disability period when adjusted for age and sex. In the fully-adjusted model hazard ratios per one unit increase in optimism were 0.79 (95% CI 0.66–0.96) for work disability and 1.30 (95% CI 1.01–1.66) for return to work. The pessimism mean score (range 1–4) was only associated with a lower probability of returning to work (fully-adjusted HR per one unit increase 0.66, 95% Cl 0.49–0.88). The level of optimism was a stronger predictor of work disability with a diagnosis of depression than the level of pessimism, while both optimism and pessimism predicted returning to work.

Source: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T2X-51D5RG9-1&_user=4494765&_coverDate=04%2F30%2F2011&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1709650748&_rerunOrigin=google&_acct=C000063264&_version=1&_urlVersion=0&_userid=4494765&md5=f107708d5a6f2be23062c75bfe0a26b1&searchtype=a

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