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Exclusion of patients with concomitant chronic conditions in ongoing randomised controlled trials targeting 10 common chronic conditions and registered at ClinicalTrials.gov: a systematic review of registration details.

Abstract：

OBJECTIVES:To systematically assess registration details of ongoing randomised controlled trials (RCTs) targeting 10 common chronic conditions and registered at ClinicalTrials.gov and to determine the prevalence of (1) trial records excluding patients with concomitant chronic condition(s) and (2) those specifically targeting patients with concomitant chronic conditions. DESIGN:Systematic review of trial registration records. DATA SOURCES:ClinicalTrials.gov register. STUDY SELECTION:All ongoing RCTs registered from 1 January 2014 to 31 January 2015 that assessed an intervention targeting adults with coronary heart disease (CHD), hypertension, heart failure, stroke/transient ischaemic attack, atrial fibrillation, type 2 diabetes, chronic obstructive pulmonary disease, painful condition, depression and dementia with a target sample size ≥100. DATA EXTRACTION:From the trial registration records, 2 researchers independently recorded the trial characteristics and the number of exclusion criteria and determined whether patients with concomitant chronic conditions were excluded or specifically targeted. RESULTS:Among 319 ongoing RCTs, despite the high prevalence of the concomitant chronic conditions, patients with these conditions were excluded in 251 trials (79%). For example, although 91% of patients with CHD had a concomitant chronic condition, 69% of trials targeting such patients excluded patients with concomitant chronic condition(s). When considering the co-occurrence of 2 chronic conditions, 31% of patients with chronic pain also had depression, but 58% of the trials targeting patients with chronic pain excluded patients with depression. Only 37 trials (12%) assessed interventions specifically targeting patients with concomitant chronic conditions; 31 (84%) excluded patients with concomitant chronic condition(s). CONCLUSIONS:Despite widespread multimorbidity, more than three-quarters of ongoing trials assessing interventions for patients with chronic conditions excluded patients with concomitant chronic conditions.

journal_name

BMJ Open

journal_title

BMJ open

authors

Buffel du Vaure C,Dechartres A,Battin C,Ravaud P,Boutron I

doi

10.1136/bmjopen-2016-012265

subject

Has Abstract

pub_date

2016-09-27 00:00:00

pages

e012265

issue

issn

2044-6055

pii

bmjopen-2016-012265

journal_volume

pub_type

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Exclusion of patients with concomitant chronic conditions in ongoing randomised controlled trials targeting 10 common chronic conditions and registered at ClinicalTrials.gov: a systematic review of registration details.