A cohort examination to establish reporting of the remit and function of Trial Steering Committees in randomised controlled trials

Elizabeth J. Conroy*, Barbara Arch, Nicola L. Harman, J. Athene Lane, Steff C. Lewis, John Norrie, Matthew R. Sydes, Carrol Gamble

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

2 Citations (Scopus)
256 Downloads (Pure)


The DAMOCLES project established a widely used Data Monitoring Committee (DMC) Charter for Randomised Controlled Trials (RCTs). Typically, within the UK, the DMC is advisory and recommends to another executive body; the Trial Steering Committee (TSC). Despite the executive role of the TSC, the CONSORT statement doesn't explicitly require reporting of TSC activity, although is included as an example of good reporting. A lack of guidance on TSC reporting can impact transparency of trial oversight, ultimately leading to a misunderstanding regarding role and subsequently further variation in practice. This review aimed to establish reporting practice of TSC involvement in RCTs, and thus make recommendations for reporting.
A cohort examination identifying reporting practice was undertaken. The cohort
comprised RCTs published in three leading medical journals (British Medical Journal, Lancet and New England Journal of Medicine) within six months in 2012 and the full HTA Monograph series. Details of TSC constitution and impact were extracted from main publications and published supplements.
Of 415 publications, 264 were eligible. These were typical in terms of trial design. Variations in reporting between journals and monographs was notable. TSC presence was identified in approximately half of trials (n=144), of which 109 worked alongside a DMC in 109 of these. No publications justified not convening a TSC. When reported, the role of the committee and examples of impact in design, conduct and analysis were summarised.
We present the first review of reporting TSC activity in the published literature. An absence of reporting standards with regards to TSC constitution, activity and impact on trial conduct was identified which can influence transparency of reporting trial oversight. Consistent reporting is vital for the benefits and impact of the TSC role to be understood to support adoption of this oversight structure and reduce global variations in practice.
Original languageEnglish
Article number590
Publication statusPublished - 8 Dec 2017

Structured keywords

  • BTC (Bristol Trials Centre)
  • BRTC
  • Centre for Surgical Research


  • Clinical Trial
  • Data Monitoring Committee
  • Executive Committee
  • Oversight committee
  • Randomised controlled trial
  • Trial Steering Committee
  • Trials


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  • ConDuCT-II

    Blazeby, J.


    Project: Research

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