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Updated: May 16, 2026

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Published on: August 11, 2015
Influence of sociodemographic and socioeconomic features on treatment outcome in RCTs versus daily psychiatric
R van der Lem1, P M Stamsnieder, N J A van der Wee
1Department of Psychiatry, Leiden University Medical Center/Rivierduinen, Albinusdreef 2, PO Box 9600, 2300 RC, Leiden, The Netherlands. rosalind.van.der.lem@hetdok.nl
Purpose:
Sociodemographic and socioeconomic characteristics of participants in antidepressant and psychotherapy efficacy trials (AETs and PETs) for major depressive disorder (MDD) may limit the generalizability of the results. We compared trial participants with daily practice patients. We subsequently assessed the influence of socio-demographic and socioeconomic status on treatment outcome in daily practice.
Methods:
Data on daily practice patients were derived through routine outcome monitoring (ROM). We included 626 patients with MDD according to the MINIplus. Distributions of age, gender, race, marital status and employment status were compared with participants in 63 selected AETs and PETs. Influence of these features on treatment outcome was explored through multivariate regression analysis.
Results:
Trial participants were older, more often male (diff. 4 %, p = 0.05), white (diff. 4 %, p < 0.001) and not married (diff. 7 %, p = 0.003). Although significant, most differences were relatively small. However, the difference in employment status was striking: 34 % of the ROM patients were currently working versus 68 % of the trial participants (diff. 34 %, p < 0.001). Being employed contributed to a positive treatment outcome: OR 1.8 for response [50 % reduction of Montgomery Asberg Rating Scale for Depression (MADRS)], OR 1.9 for remission (MADRS ≤10).
Conclusions:
Employment status should be taken into account while interpreting results from randomized controlled trials and as predictor of treatment success in daily practice.
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