Cited by 165Meta-analysis and systematic reviewsEthics in Clinical ResearchStatistical Methods in Clinical Trials

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index; none of the 34 sources its claims cite is checked for support yet.

The recording of adverse events from psychological treatments in clinical trials: evidence from a review of NIHR-funded trials

Open access

Abstract

BACKGROUND: There is a concern in the literature that harm from interventions is insufficiently documented in clinical trials in general, and in those assessing psychological treatments in particular. A recent decision by a trial steering committee to stop recruitment into a randomized controlled trial (RCT) of a psychological intervention for personality disorder led to an investigation of the recording of harm in trials funded by the National Institute for Health Research (NIHR). METHODS: The protocols and final reports of all 82 NIHR trials funded between 1995 and 2013 were examined for the reporting of adverse events. These were subdivided by category of intervention. RESULTS: None of the psychological intervention trials mentioned the occurrence of an adverse event in their final report. Trials of drug treatments were more likely to mention adverse events in their protocols compared with those using psychological treatments. When adverse events were mentioned, the protocols of psychological interventions relied heavily on severe adverse events guidelines from the National Research Ethics Service (NRES), which were developed for drug rather than psychological interventions and so may not be appropriate for the latter. CONCLUSIONS: This survey supported the belief that the reporting of adverse events in psychological treatments is weak and the criteria used may not be appropriate. Recommendations are made as to how current practice might be improved.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

In a review of 82 NIHR-funded trials, psychological intervention trials were far less likely than drug trials to specify or report adverse events, and none of the completed psychological trials mentioned adverse events in final reports. When psychological protocols did mention adverse events, they largely used NRES severe-adverse-event categories developed for drug trials, which may not fit psychological interventions.

Key findings

  • None of the psychological intervention trials mentioned the occurrence of an adverse event in their final report; in completed studies using a psychological intervention, there was no mention of an adverse event in any of the 14 completed studies.
  • Drug trials were more likely to mention adverse events in protocols than psychological trials: in incomplete studies with protocols only, 8/8 drug protocols (100%) and 2/2 combined protocols (100%) mentioned adverse events, compared with 17/28 psychological protocols (61%).
  • When psychological protocols listed adverse events, they relied heavily on NRES severe-adverse-event definitions: death in 65%, hospitalization in 56%, persistent disability in 43%, and congenital abnormality or birth defect in 39%; events more relevant to psychological therapy, such as self-harm, symptom change, distress, or Accident & Emergency attendance, were mentioned in only a few trials.
  • No trial was found to have been discontinued because of adverse event reports prior to the PEPS trial, and none of the trials using a psychological treatment were stopped because of an adverse event differential.

Methods

  • Retrospective documentary review of protocols and final reports from all 82 NIHR trials funded between August 1995 and October 2013, subdivided into psychological only, drug only, combined psychological and drug, and other interventions.
  • Trials were categorized as completed with protocol, completed without protocol, incomplete with protocol only, or incomplete in editorial with protocol only; 44 interventions were psychological, 14 drug, 5 combined, and 19 other.
  • The first author manually searched the reports and extracted any information on adverse events from protocols and/or final reports where available, summarized descriptively by intervention type and trial status.

Limitations

  • The paper states that small numbers of trials in each group make it difficult to be confident that differences between psychological and pharmacological trials, or between earlier and later protocols, are robust; earlier trials often lacked accessible protocols because the funding agency did not insist on them.
  • Evident from the text: adverse event information was extracted manually by the first author, and many incomplete trials had only protocols available, so final-report reporting could not be assessed for those trials.
  • Evident from the text: the review reports descriptive counts and percentages without formal statistical testing of the differences between intervention categories.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1186/1745-6215-15-335

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Figures

Figure 1 A definition of harm from a psychological intervention together with its measurement and etiology.
Figure 1 A definition of harm from a psychological intervention together with its measurement and etiology.CC BY · PubMed Central
Figure 2 Flow diagram of included and excluded trials from the NIHR database.
Figure 2 Flow diagram of included and excluded trials from the NIHR database.CC BY · PubMed Central

Verification

Claims the paper makes

33 Not checked yet · 22 Own result · 14 Own interpretation · 7 No basis given · 1 Own method

Verify all 34 references — free account

Show all 46 claims

  • It may state two separate claims as one. 19
  • Probably not a substantial claim. 18
31 of 31
  • The paper relies on this without support.

    The NRES severe adverse events guidelines were developed for drug rather than psychological interventions.

    “which were developed for drug rather than psychological interventions”
  • The paper relies on this without support.

    The growing interest in the issue of harm from psychological interventions does not affect the recording of harm in clinical trials that assess psychological interventions.

    “it nonetheless does not appear to affect the recording of harm (or lack thereof) in clinical trials that assess psychological interventions.”
  • The paper relies on this without support.

    Indications of potential harm are adverse events, deterioration in mental state and the patient’s perceptions of having been adversely affected.

    “Indications of potential harm are adverse events, deterioration in mental state and the patient’s perceptions of having been adversely affected.”
  • The paper relies on this without support.

    Adverse events would be expected to be routinely recorded and reported in well-conducted randomized controlled trials.

    “which one would expect to be routinely recorded and reported in well-conducted randomized controlled trials.”
4 of 4

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

6 of 6

Citations

Cites

1 retracted

Show all 34 references

Research works printed but not linked: 1

  1. Lambert MJ: The efficacy and effectiveness of psychotherapy. Chapter 6. Bergin & Garfield’s Handbook of Psychotherapy and Behavior Change Sixth Edition. Edited by: Lambert MJ. 2013, New Jersey: Wiley

Cited by

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Metadata

Authors
Duggan, C., Parry, G., McMurran, M., Davidson, K., & Dennis, J.
Affiliations
  • University of Nottingham (GB)
  • University of Sheffield (GB)
  • University of Glasgow (GB)
  • Campbell Collaboration (NO)
Corresponding author
Duggan, Conor
Venue
Trials
Published
2014-08-27
Volume
15
Issue
1
Pages
335-335
ISSN
1745-6215 (ISSN-L)
OpenAlex
W2107036532
Cited by
165
References
34
Citations by year
2026: 9 · 2025: 10 · 2024: 20 · 2023: 20 · 2022: 11 · 2021: 21 · 2020: 21 · 2019: 12 · 2018: 13 · 2017: 12 · 2016: 11 · 2015: 4 · 2014: 1
FWCI
9.10
Type
journal article
Language
en
Open access
Locations
  • Trials (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
  • Explore Bristol Research (submittedVersion)
Funders
  • National Institute for Health and Care Research (08/53/06, PB-PG-0408-15144)
  • University of Southampton
Topics
  • Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Ethics in Clinical Research
  • Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Clinical Trials
Keywords
adverse events, harms reporting, psychological intervention, clinical trials, National Institute for Health Research, personality disorders, trial steering committee
MeSH terms
Clinical Protocols, Clinical Trials as Topic, Humans, Psychotherapy, Biomedical Technology

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