Increasing financial incentives can lower the cost of trial recruitment

Abstract Monetary incentives are commonly used to help recruit trial participants. Some studies have found greater recruitment with larger incentives, while others have found smaller incentives more cost-effective in terms of cost per participant. As part of an implementation study, we compared the...

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Main Authors: Alan Schwartz, Saul J. Weiner, Molly Harrod
Format: Article
Language:English
Published: BMC 2024-12-01
Series:Trials
Subjects:
Online Access:https://doi.org/10.1186/s13063-024-08674-w
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author Alan Schwartz
Saul J. Weiner
Molly Harrod
author_facet Alan Schwartz
Saul J. Weiner
Molly Harrod
author_sort Alan Schwartz
collection DOAJ
description Abstract Monetary incentives are commonly used to help recruit trial participants. Some studies have found greater recruitment with larger incentives, while others have found smaller incentives more cost-effective in terms of cost per participant. As part of an implementation study, we compared the impact of four approaches to recruitment, three of which involved phone recruitment with varying financial incentives. Adding modest financial incentives reliably increased the recruitment ratio, and greater incentives increased recruitment more than smaller incentives. However, recruiters required less time to obtain agreement to participate when the greater incentive was offered, and these time savings made the greater incentive cost-saving relative to the smaller incentive and cost-effective relative to no incentive. Our results suggest the possibility of a “sweet spot” for financial incentives, and that trial designers should consider pilot-testing incentive levels in the context of their other recruitment costs to determine whether paying participants more may be cost-saving for trial sponsors.
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spelling doaj-art-0e17587ea7f142ef996b97a718005a2a2024-12-22T12:45:58ZengBMCTrials1745-62152024-12-012511310.1186/s13063-024-08674-wIncreasing financial incentives can lower the cost of trial recruitmentAlan Schwartz0Saul J. Weiner1Molly Harrod2Department of Medical Education, University of Illinois at ChicagoDepartment of Medical Education, University of Illinois at ChicagoCenter for Clinical Management Research, Health Service Research & Development, LTC Charles S. Kettles VA Medical Center, VA Ann Arbor Healthcare SystemAbstract Monetary incentives are commonly used to help recruit trial participants. Some studies have found greater recruitment with larger incentives, while others have found smaller incentives more cost-effective in terms of cost per participant. As part of an implementation study, we compared the impact of four approaches to recruitment, three of which involved phone recruitment with varying financial incentives. Adding modest financial incentives reliably increased the recruitment ratio, and greater incentives increased recruitment more than smaller incentives. However, recruiters required less time to obtain agreement to participate when the greater incentive was offered, and these time savings made the greater incentive cost-saving relative to the smaller incentive and cost-effective relative to no incentive. Our results suggest the possibility of a “sweet spot” for financial incentives, and that trial designers should consider pilot-testing incentive levels in the context of their other recruitment costs to determine whether paying participants more may be cost-saving for trial sponsors.https://doi.org/10.1186/s13063-024-08674-wFinancial incentiveRecruitmentCost-effectivenessClinical trial
spellingShingle Alan Schwartz
Saul J. Weiner
Molly Harrod
Increasing financial incentives can lower the cost of trial recruitment
Trials
Financial incentive
Recruitment
Cost-effectiveness
Clinical trial
title Increasing financial incentives can lower the cost of trial recruitment
title_full Increasing financial incentives can lower the cost of trial recruitment
title_fullStr Increasing financial incentives can lower the cost of trial recruitment
title_full_unstemmed Increasing financial incentives can lower the cost of trial recruitment
title_short Increasing financial incentives can lower the cost of trial recruitment
title_sort increasing financial incentives can lower the cost of trial recruitment
topic Financial incentive
Recruitment
Cost-effectiveness
Clinical trial
url https://doi.org/10.1186/s13063-024-08674-w
work_keys_str_mv AT alanschwartz increasingfinancialincentivescanlowerthecostoftrialrecruitment
AT sauljweiner increasingfinancialincentivescanlowerthecostoftrialrecruitment
AT mollyharrod increasingfinancialincentivescanlowerthecostoftrialrecruitment