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"And Then He Got into the Wrong Group": A Qualitative Study Exploring the Effects of Randomization in Recruitment to a Randomized Controlled Trial.

Abstract：

BACKGROUND:Randomized controlled trials (RCTs) are regarded as the most internally valid means of estimating the effectiveness of complex public health interventions, but the recruitment of participants can be difficult. The aim of this study was to explore factors that may have affected the recruitment of employees with musculoskeletal disorders (MSDs) to a multicenter worksite health promotion program from the perspective of recruiting case managers. METHODS:Factors in recruitment to the RCT were explored using three focus group discussions with case managers. Data were processed using MAXQDA and analyzed with a combination of content and sequence analysis. RESULTS:Findings showed that randomization is a major challenge for recruitment. Case managers adapted their communication with, and approaches to possible participants because of the randomization design and employed coping strategies to compensate for allocation into the control arm of the study. Perceptions of the superiority of the intervention group over the control group, perceptions of the (mis)match of participants to one of the groups, as well as the understanding of the necessity of randomization for effectiveness evaluations, further affected recruitment. Perceived expectations of possible participants and their (emotional) reactions to the randomization allocation also complicated recruitment. CONCLUSION:We were able to gain insight into the challenges of randomization for the recruitment of participants to a multicenter RCT. This study assisted the development of strategies to overcome barriers in the ongoing implementation process of the trial (i.e., the adaption of best practice information sheets and newsletters). There remains a need to develop effective interventions to help those recruiting to trials.

journal_name

Int J Environ Res Public Health

journal_title

International journal of environmental research and public health

authors

Lehmann BA,Lindert L,Ohlmeier S,Schlomann L,Pfaff H,Choi KE

doi

10.3390/ijerph17061886

subject

Has Abstract

pub_date

2020-03-14 00:00:00

issue

eissn

1661-7827

issn

1660-4601

pii

ijerph17061886

journal_volume

pub_type

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"And Then He Got into the Wrong Group": A Qualitative Study Exploring the Effects of Randomization in Recruitment to a Randomized Controlled Trial.