Thapar, Ajay, Hammerton, Gemma, Collishaw, Stephan, Potter, Robert, Rice, Frances, Harold, Gordon, Craddock, Nicholas, Thapar, Anita and Smith, Daniel J (2014) Detecting recurrent major depressive disorder within primary care rapidly and reliably using short questionnaire measures. British Journal of General Practice, 64 (618). e31-e37. ISSN 0960-1643

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Abstract

Background: Major depressive disorder (MDD) is often a chronic disorder with relapses usually detected and managed in primary care using a validated depression symptom questionnaire. However, for individuals with recurrent depression the choice of which questionnaire to use and whether a shorter measure could suffice is not established.

Aim: To compare the nine-item Patient Health Questionnaire (PHQ-9), the Beck Depression Inventory, and the Hospital Anxiety and Depression Scale against shorter PHQ-derived measures for detecting episodes of DSM-IV major depression in primary care patients with recurrent MDD.

Design and setting: Diagnostic accuracy study of adults with recurrent depression in primary care predominantly from Wales.

Method: Scores on each of the depression questionnaire measures were compared with the results of a semi-structured clinical diagnostic interview using Receiver Operating Characteristic curve analysis for 337 adults with recurrent MDD.

Results: Concurrent questionnaire and interview data were available for 272 participants. The onemonth prevalence rate of depression was 22.2%. The area under the curve (AUC) and positive predictive value (PPV) at the derived optimal cut-off value for the three longer questionnaires were comparable (AUC = 0.86-0.90, PPV = 49.4-58.4%) but the AUC for the PHQ-9 was significantly greater than for the PHQ-2. However, by supplementing the PHQ-2 score with items on problems concentrating and feeling slowed down or restless, the AUC (0.91) and the PPV (55.3%) were comparable with those for the PHQ-9.

Conclusion: A novel four-item PHQ-based questionnaire measure of depression performs equivalently to three longer depression questionnaires in identifying depression relapse in patients with recurrent MDD.

Item Type:	Article
Schools and Departments:	School of Psychology > Psychology
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Depositing User:	Gordon Harold
Date Deposited:	27 Jul 2016 12:31
Last Modified:	07 Mar 2017 06:05
URI:	http://srodev.sussex.ac.uk/id/eprint/62120

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