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Long-term follow-up on health-related quality of life in major depressive disorder: a 2-year European cohort study

Authors Saragoussi D, Christensen MC, Hammer-Helmich L, Rive B, Touya M, Haro JM

Received 8 December 2017

Accepted for publication 9 April 2018

Published 22 May 2018 Volume 2018:14 Pages 1339—1350

DOI https://doi.org/10.2147/NDT.S159276

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Lucy Goodman

Peer reviewer comments 3

Editor who approved publication: Dr Roger Pinder


Delphine Saragoussi,1 Michael Cronquist Christensen,2 Lene Hammer-Helmich,3 Benoît Rive,4 Maëlys Touya,5 Josep Maria Haro6

1Real-World Evidence and Epidemiology, Lundbeck SAS, Issy-les-Moulineaux, France; 2Medical Affairs Vortioxetine, H. Lundbeck A/S, Valby, Denmark; 3Real-World Evidence and Epidemiology, H. Lundbeck A/S, Valby, Denmark; 4Global Analytics, Lundbeck SAS, Issy-les-Moulineaux, France; 5Health Economics and Outcomes Research, Lundbeck, Deerfield, IL, USA; 6Research and Teaching Unit, Parc Sanitari Sant Joan de Deu, CIBERSAM, University of Barcelona, Sant Boi de Llobregat, Barcelona, Spain

Background: Major depressive disorder (MDD) is associated with significant impairments in health-related quality of life (HRQoL) and everyday functioning. This cohort study investigated the long-term development of HRQoL in patients with MDD and its association with patient characteristics, including depressive symptom severity and cognitive symptoms.
Methods: The Prospective Epidemiological Research on Functioning Outcomes Related to Major depressive disorder (PERFORM) study was a longitudinal cohort study conducted in 1,159 outpatients aged 18–65 years with MDD in France, Germany, Spain, Sweden, and the UK. The patients were either initiating antidepressant monotherapy or undergoing their first switch of antidepressant. HRQoL was assessed using the Medical Outcomes Study Short-Form 12-item Health Survey (SF-12) up to month 12 and the EuroQol Five Dimensions questionnaire up to month 24 (UK only). Depressive symptom severity was assessed up to month 24 by the patient-reported Patient Health Questionnaire and cognitive symptoms by the Perceived Deficit Questionnaire. Multivariate analyses were performed to identify patient characteristics associated with HRQoL.
Results: Mental HRQoL was severely impaired at baseline versus normative data (mean [SD] SF-12 mental component summary [MCS], 26.5 [9.2]); mean (SD) physical component summary (PCS) total score was 45.2 (12.1). SF-12 MCS improved over 12 months of follow-up (38.7 [11.6] at month 12), while SF-12 PCS remained stable (45.3 [11.1]). At each assessment time point, there was a clear pattern of lower SF-12 MCS and PCS total score in patients experiencing greater cognitive problems. The mean EuroQol Five Dimensions questionnaire utility index score generally decreased (i.e., worsened) with increasing severity of cognitive and depressive symptoms at all time points up to 24 months. Multivariate analyses identified both depression severity and cognitive symptoms as strongly and significantly associated with poor HRQoL.
Conclusion: These findings highlight the importance of recognizing and managing residual symptoms in patients with MDD, including the cognitive symptoms, to restore long-term psychosocial functioning.

Keywords: major depressive disorder, health-related quality of life, depression, cognitive symptoms
 

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