Medical Research Council Complex Interventions Research Model

The consensus project for the proposed CReDECI reporting criteria on complex interventions

Project Overview

Based on the updated MRC framework and corresponding methodological literature, a set of criteria on the reporting and evaluation of complex interventions has been developed and reviewed by experts in the field. As a result, a criteria list comprising 16 items has been created covering the first three stages of the MRC framework: (1) development; (2) feasibility and piloting; and (3) introduction of the intervention and evaluation. The list provides a minimum standard of criteria necessary to ensure high quality reporting of studies on the development and evaluation of complex interventions. This project will develop the criteria further and establish a consensus on their content and use.

This project is completed.

Register Interest Project Abstract

Project Team

Message Board Latest

  • Dear project member,
    We are happy to inform you that the revised criteria list (CReDECI 2) was recently published in Trials. You find the publication here on the REFLECTION network project page.

    Thank you very much for your support.

    Best wishes,
    Ralph Möhler on behalf of the CReDECI project members Ralph Möhler Reply 08.10 18/06/2015

  • Dear colleagues,
    Thank you very much for your feedback. We have revised the criteria list based on your comments and are now sending you the revised CReDECI 2 list (please see the document section on the project page).

    The main changes are as follows (changes are highlighted in blue):
    • we merged the items two and three,
    • we changed some of the examples,
    • we replaced the term ‚implementation‘ by ‚delivery‘.

    If you have any further comments, please send a mail to

    As the final step, we will now prepare a publicaion on behalf of the complete consensus participants.

    Thank you very much for your support in the consensus process.

    Best wishes,
    Ralph on behalf of the CReDECI project members Ralph Möhler Reply 09.01 21/05/2014

  • Dear colleague,
    Please take the last opportunity to fill the CReDECI feedback questionnaire, if not already done. The survey will be closed on Monday, the 30th of September. I am looking forward to receive your valuable feedback!

    Best wishes,
    Ralph on behalf of the CReDECI project members Ralph Möhler Reply 15.13 23/09/2013

  • Dear colleague,
    I have just replied to your request, due to the Easter holidays that we have had in Greece.

    Best regards,

    Styliani. Styliani Tziaferi Reply 22.04 13/05/2013

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