Evidence map›Paper›PMID 30180833›Full record

ArticleBMC public health2018

Response bias to a randomised controlled trial of a lifestyle intervention in people at high risk of cardiovascular disease: a cross-sectional analysis.

Adam Bayley, Daniel Stahl, Mark Ashworth, Derek G Cook, Peter H Whincup, Janet Treasure, Anne Greenough, Katie Ridge, Kirsty Winkley, Khalida Ismail

Open access · goldAbstract read
In one paragraph

Article in BMC public health, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.4field-weighted citation impact, top 6% 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

13 citing papers in PubMed, 30 citations in OpenAlex.

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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

10 authors at 3 institutions in 1 country.

Adam BayleyDepartment of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College Londonz, 10 Cutcombe Road, London, SE5 9RJ, UK.
Daniel StahlDepartment of Biostatistics, Institute of Psychiatry, King's College London, 16 De Crespigny Park, London, SE5 8AF, UK.
Mark AshworthDepartment of Primary Care and Public Health Sciences, King's College London, Addison House, Guy's Campus, London, SE1 1UL, UK.
Derek G CookPopulation Health Research Institute, St George's, University of London, Cranmer Terrace, London, SW17 0RE, UK.
Peter H WhincupPopulation Health Research Institute, St George's, University of London, Cranmer Terrace, London, SW17 0RE, UK.
Janet TreasureDepartment of Health Services and Population Research, Institute of Psychiatry, King's College London, 16 De Crespigny Park, London, SE5 8AF, UK.
Anne GreenoughDivision of Asthma, Allergy and Lung Biology, King's College London, Guy's Hospital, London, SE1 9RT, UK.
Katie RidgeDepartment of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College Londonz, 10 Cutcombe Road, London, SE5 9RJ, UK.
Kirsty WinkleyDepartment of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College Londonz, 10 Cutcombe Road, London, SE5 9RJ, UK.
Khalida IsmailDepartment of Psychological Medicine, Institute of Psychiatry, Psychology and Neuroscience, King's College Londonz, 10 Cutcombe Road, London, SE5 9RJ, UK. khalida.2.ismail@kcl.ac.uk.
King's College London · GBSt George's, University of London · GBAsthma UK · GB

Funding

Department of Health 10/62/03Health Technology Assessment Programme 10/62/03Medical Research Council G1000758
6 · The paper itself

Abstract

backgroundResearch evaluating lifestyle interventions for prevention of cardiovascular disease (CVD) may not reach those most at risk. We compared the response rate to a randomised controlled trial (RCT) of a lifestyle intervention by CVD risk, ethnicity and level of deprivation.

methodsPrimary care patients with a QRisk2 score ≥ 20% were invited to participate in a RCT of an intensive lifestyle intervention versus usual care. This cross-sectional analysis compares anonymised data of responders and non-responders with multiple logistic regression, using adjusted odds ratios (AORs) for QRisk2 score, ethnicity, Index of Multiple Deprivation (IMD 2010) quintile, age and sex.

resultsFrom 60 general practices, 8902 patients were invited and 1489 responded. The mean age was 67.3 years and 21.0% were female. Of all patients invited, 69.9% were of white ethnic background, 13.9% ethnic minority backgrounds and 16.2% had no ethnicity data recorded in their medical records. Likelihood of response decreased as QRisk2 score increased (AOR 0.82 per 5 percentage points, 95% CI 0.77-0.88). Black African or Caribbean patients (AOR 0.67; 95% CI 0.45-0.98) and those with missing ethnicity data (AOR 0.55; 95% CI 0.46-0.66) were less likely to respond compared to participants of white ethnicity, but there was no difference in the response rates between south Asian and white ethnicity (AOR 1.08; 95% CI 0.84-1.38). Patients residing in the fourth (AOR 0.70; 95% CI 0.56-0.87) and fifth (AOR 0.52; 95% CI 0.40-0.68) most deprived IMD quintile were less likely to respond compared to the least deprived quintile.

conclusionsEvaluations of interventions intended for those at high risk of CVD may fail to reach those at highest risk. Hard to reach patient groups may require different recruitment strategies to maximise participation in future trials. Improvements in primary care ethnicity data recording is required to aid understanding of how successfully study samples represent the target population.

trial registrationISRCTN, ISRCTN84864870. Registered 15 May 2012, https://doi.org/10.1186/ISRCTN84864870 .

Indexed as

Life StyleRandomized Controlled Trials as TopicAdultAgedCardiovascular DiseasesCross-Sectional StudiesFemaleHumansMaleMiddle AgedRisk AssessmentSelection BiasSocioeconomic FactorsSurveys and QuestionnairesCardiovascular diseaseComplex interventionLifestyleParticipation biasPhysical activityPrimary care

Identifiers

PMID30180833
PMCPMC6124010
OpenAlexW2890597908

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.