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Antidepressant medication and interpersonal psychotherapy (IPT) are both recommended interventions in depression treatment guidelines based on literature reviews and meta-analyses. However, ‘conventional’ meta-analyses comparing their efficacy are limited by their reliance on reported study-level information and a narrow focus on depression outcome measures assessed at treatment completion. Individual participant data (IPD) meta-analysis, considered the gold standard in evidence synthesis, can improve the quality of the analyses when compared with conventional meta-analysis.
We describe the protocol for a systematic review and IPD meta-analysis comparing the efficacy of antidepressants and IPT for adult acute-phase depression across a range of outcome measures, including depressive symptom severity as well as functioning and well-being, at both post-treatment and follow-up (PROSPERO: CRD42020219891).
We will conduct a systematic literature search in PubMed, PsycINFO, Embase and the Cochrane Library to identify randomised clinical trials comparing antidepressants and IPT in the acute-phase treatment of adults with depression. We will invite the authors of these studies to share the participant-level data of their trials. One-stage IPD meta-analyses will be conducted using mixed-effects models to assess treatment effects at post-treatment and follow-up for all outcome measures that are assessed in at least two studies.
This will be the first IPD meta-analysis examining antidepressants versus IPT efficacy. This study has the potential to enhance our knowledge of depression treatment by comparing the short- and long-term effects of two widely used interventions across a range of outcome measures using state-of-the-art statistical techniques.
Mindfulness-based cognitive therapy (MBCT) and maintenance antidepressant medication (mADM) both reduce the risk of relapse in recurrent depression, but their combination has not been studied.
To investigate whether MBCT with discontinuation of mADM is non-inferior to MBCT+mADM.
A multicentre randomised controlled non-inferiority trial (ClinicalTrials.gov: NCT00928980). Adults with recurrent depression in remission, using mADM for 6 months or longer (n = 249), were randomly allocated to either discontinue (n = 128) or continue (n = 121) mADM after MBCT. The primary outcome was depressive relapse/recurrence within 15 months. A confidence interval approach with a margin of 25% was used to test non-inferiority. Key secondary outcomes were time to relapse/recurrence and depression severity.
The difference in relapse/recurrence rates exceeded the non-inferiority margin and time to relapse/recurrence was significantly shorter after discontinuation of mADM. There were only minor differences in depression severity.
Our findings suggest an increased risk of relapse/recurrence in patients withdrawing from mADM after MBCT.
This chapter describes the concepts and techniques of interpersonal psychotherapy (IPT) and provides the current status of adaptation, efficacy data and training. IPT is based on interpersonal theory stemming from the post-Second World War work of Adolph Meyer and Harry Stack Sullivan. This theory states that the need for attachment is an intrinsic human drive that is biologically grounded. The patient is educated about depression, its symptom course and various treatment options and helped to understand that depression is a common malady, not a personal failing or weakness. Empirical trials have validated the utility of IPT as both an acute and a maintenance treatment for nonpsychotic major depression. IPT also has demonstrated efficacy as a treatment for depressed adolescents, geriatric patients, depressed patients in primary care, depressed HIV-positive patients, depressed women in marital disputes and for pregnant and postpartum women, as well as for nondepressed bulimic patients.