Evidence map›Paper›PMID 23842013›Full record

ArticleThe Journal of clinical psychiatry2013

Participants with schizophrenia retain the information necessary for informed consent during clinical trials.

Bernard A Fischer, Robert P McMahon, Walter A Meyer, Daniel J Slack, Paul S Appelbaum, William T Carpenter

Abstract read
In one paragraph

Article in The Journal of clinical psychiatry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.7field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Increasing participation of people with thought disorder in clinical research.European psychiatry : the journal of the Association of European Psychiatrists · 2026
    Review
  3. Article
  4. Article
  5. Therapeutic Misconception in Psychiatry Research: A Systematic Review.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2016
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Bernard A FischerMaryland Psychiatric Research Center, PO Box 21247, Baltimore, MD 21228, USA. bfischer@mprc.umaryland.edu
Robert P McMahon
Walter A Meyer
Daniel J Slack
Paul S Appelbaum
William T Carpenter
University of Mary · US

Funding

RESEARCH ETHICS IN SCHIZOPHRENIAR01MH058898 · NIMH · UNIVERSITY OF MARYLAND BALTIMORE · PI CARPENTER, WILLIAM T. · 1999 to 2008
$3.5M
NIMH NIH HHS R01 MH058898NIMH NIH HHS R01MH058898
6 · The paper itself

Abstract

objectiveCognitive impairment is a characteristic of schizophrenia. This impairment may affect the retention of information required for ongoing knowledgeable participation in clinical trials. This study monitored retention of study-related knowledge-including assessment of therapeutic misconception-in people with stable, DSM-IV schizophrenia during participation in placebo-controlled clinical trials of adjunctive agents. Stability was defined as being on an antipsychotic with no change in medication or dose over the previous 4 weeks.

methodThis longitudinal study assessed retention of clinical trial-related consent information. Individuals enrolling in 1 of 8 clinical trials were approached for participation. Participants came from research clinics and community mental health centers. At baseline, clinical trial consent forms were reviewed and study knowledge assessed. Participants were randomized to follow-up assessments at weeks 1, 4, and 8; weeks 4 and 8; or at week 8 only. Clinical trial consent forms were not rereviewed at any follow-up visit.

resultsFifty-nine participants were enrolled; analysis included 52 participants with at least 1 follow-up visit. Study knowledge did not decrease meaningfully in any group. Therapeutic misconception was not observed in participants during the study. The group assessed most frequently demonstrated significant improvement over baseline (t44 = 3.43, P = .001). Retention of study knowledge was not related to symptoms but had a weak correlation with cognitive capacity (R = 0.28, P = .07). Performance did not differ between participants from research clinics and those from community mental health centers.

conclusionsClinically stable people with schizophrenia enrolling in a placebo-controlled adjunctive medication study, once determined to have capacity to consent to a clinical trial, retained appropriate study knowledge for at least 8 weeks. In the absence of a specific reason to suspect a loss of decisional capacity, there appears to be no need to routinely reevaluate participants during this type of clinical trial.

Indexed as

Schizophrenic PsychologyAdultFemaleHumansInformed ConsentLongitudinal StudiesMaleMental CompetencyRandomized Controlled Trials as TopicTherapeutic Misconception

Identifiers

PMID23842013
PMCPMC4482016
OpenAlexW2068235149

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.