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  • Title: Response style and severity and chronicity of depressive disorders in primary health care.
    Author: Riihimäki K, Vuorilehto M, Jylhä P, Isometsä E.
    Journal: Eur Psychiatry; 2016 Mar; 33():1-8. PubMed ID: 26854983.
    Abstract:
    BACKGROUND: Response styles theory of depression postulates that rumination is a central factor in occurrence, severity and maintaining of depression. High neuroticism has been associated with tendency to ruminate. We investigated associations of response styles and neuroticism with severity and chronicity of depression in a primary care cohort study. METHODS: In the Vantaa Primary Care Depression Study, a stratified random sample of 1119 adult patients was screened for depression using the Prime-MD. Depressive and comorbid psychiatric disorders were diagnosed using SCID-I/P and SCID-II interviews. Of the 137 patients with depressive disorders, 82% completed the prospective five-year follow-up with a graphic life chart enabling evaluation of the longitudinal course of episodes. Neuroticism was measured with the Eysenck Personality Inventory (EPI-Q). Response styles were investigated at five years using the Response Styles Questionnaire (RSQ-43). RESULTS: At five years, rumination correlated significantly with scores of Hamilton Depression Rating Scale (r=0.54), Beck Depression Inventory (r=0.61), Beck Anxiety Inventory (r=0.50), Beck Hopelessness Scale (r=0.51) and Neuroticism (r=0.58). Rumination correlated also with proportion of follow-up time spent depressed (r=0.38). In multivariate regression, high rumination was significantly predicted by current depressive symptoms and neuroticism, but not by anxiety symptoms or preceding duration of depressive episodes. CONCLUSIONS: Among primary care patients with depression, rumination correlated with current severity of depressive symptoms, but the association with preceding episode duration remained uncertain. The association between neuroticism and rumination was strong. The findings are consistent with rumination as a state-related phenomenon, which is also strongly intertwined with traits predisposing to depression.
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