Article Text

Download PDFPDF
Guided or self-guided internet-based cognitive–behavioural therapy (iCBT) for depression? Study protocol of an individual participant data network meta-analysis
  1. Eirini Karyotaki1,
  2. Toshi A Furukawa2,
  3. Orestis Efthimiou3,
  4. Heleen Riper6,
  5. Pim Cuijpers4
  1. 1 Department of Clinical, Neuro- and Developmental Psychology, VU Amsterdam, Amsterdam, The Netherlands
  2. 2 Graduate School of Medicine and School of Public Health, Kyoto University, Kyoto, Japan
  3. 3 Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece
  4. 4 Department of Clinical, Neuro- and Developmental Psychology, VU Amsterdam, Amsterdam, The Netherlands
  5. 6 Department of Clinical, Neuro- and Developmental Psychology, VU Amsterdam, Amsterdam, The Netherlands
  1. Correspondence to Dr Eirini Karyotaki; e.karyotaki{at}vu.nl

Abstract

Introduction Although guided forms of internet-based cognitive–behavioural therapy (iCBT) result in a substantial reduction in depression, it seems that the most scalable way to deliver iCBT is without guidance. However, direct evidence on the comparison between guided and self-guided iCBT is scarce. Moreover, it is unclear which types of patients may benefit more from each of these two forms of iCBT. Network meta-analysis (NMA) using individual participant data (IPD) offers a way to assess the relative efficacy of multiple (>2) interventions. Moreover, it maximises our power to detect patient-level characteristics (covariates) that have an important effect on the efficacy of interventions. This protocol describes the procedures of an IPD-NMA, which aims at examining the relative efficacy of guided compared with self-guided iCBT and at identifying predictors and moderators of treatment outcome.

Methods and analysis We will use an existing database on psychotherapies for adult depression to identify eligible studies. This database has been updated up to 1 January 2018, through literature searches in PubMed, Embase, PsycINFO and Cochrane Library. The outcome of this IPD-NMA is reduction in depressive symptoms severity. We will fit the model in a Bayesian setting. After fitting the model, we will report the relative treatment effects for different types of patients, and we will discuss the clinical implications of our findings. Based on the results from the IPD-NMA model, we will develop and validate a personalised prediction model, aiming to provide patient-level predictions about the effects of the interventions.

Ethics and dissemination An ethical approval is not required for this study. The results will be published in a peer-review journal. These results will guide clinical decisions about the most efficient way to allocate iCBT resources, thereby increasing the scalability of this innovative therapeutic approach.

  • e-health
  • depression
  • individual patient data
  • network meta-analysis
  • prediction models

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

View Full Text

Statistics from Altmetric.com

Footnotes

  • Contributors EK and OE drafted the study protocol. All the authors provided input into the study design and helped in the protocol writing. EK contributed to the original data acquisition. PC and HR helped with data acquisition and administration for IPD-NMA. TAF, HR and PC supervised the overall conduct of the study. All the authors read and approved the final protocol. EK is the guarantor of the review.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Patient consent for publication Not required.

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.