Evidence map›Paper›PMID 20229222›Full record

ArticleInternational journal of behavioral medicine2011

Selection bias in a study of implantable defibrillator patients: the role of Type D personality.

Krista C van den Broek, Ivan Nyklíček, Johan Denollet

Abstract read
In one paragraph

Article in International journal of behavioral medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Prevalence of psychological distress in elderly hypertension patients in primary care.Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation · 2014
    Article
  2. Psychosocial distress under pressure.Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation · 2014
    Article
  3. Article
4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

3 authors.

Krista C van den BroekCoRPS-Center of Research on Psychology in Somatic Diseases, Department of Medical Psychology, Tilburg University, Tilburg, The Netherlands. CvdBroek@uvt.nl
Ivan Nyklíček
Johan Denollet

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSelection bias constitutes a major issue in research using volunteers as study participants. PURPOSE: We examined whether research in partners may affect participation rates of implantable cardioverter-defibrillator (ICD) patients with a Type D personality (joint presence of negative affectivity and social inhibition).

methodPatients who underwent ICD implantation between May 2003 and November 2007, and who had a partner, were included (n = 440). In September 2005, a substudy on partners of ICD patients was added (n = 276 patients).

resultsThe proportion Type D patients after the start of the partner substudy was significantly lower as compared to the proportion before this substudy (17.5% versus 28.8%; p = 0.006). Patients who participated following the start of the partner substudy were less likely to have a Type D personality (OR = 0.44; p = 0.002), adjusting for possible confounders. In the partner substudy, nonparticipation was more prevalent among partners of Type D patients as compared to partners of non-Type D patients (20.4% versus 10.1%; p = 0.044). Partner nonparticipation was marginally significantly associated with Type D personality of the patient (OR = 2.13; p = 0.083), adjusting for confounders.

conclusionsThe addition of a partner substudy may be related to a decreased proportion of participants with a Type D personality. Nonparticipation was more prevalent among partners of Type D patients. These observations may influence results of studies, as Type Ds tend to be less healthy.

Indexed as

Patient SelectionAdolescentAdultAffectAgedAged, 80 and overAnxietyDefibrillators, ImplantableDepressionFemaleHumansLogistic ModelsMaleMiddle AgedPersonalitySelection Bias

Identifiers

PMID20229222
PMCPMC3034047

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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.