Trial reportCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2009
An experimental test of the effect of incentives on recruitment of ethnically diverse colorectal cancer cases and their first-degree relatives into a research study.
Trial report in Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 3 of them syntheses that pooled it.
What it found
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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.
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.
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Who cites it
8 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Methods to increase response to postal and electronic questionnaires.The Cochrane database of systematic reviews · 2023Pooled it
- Characterization of the Hispanic or latino population in health research: a systematic review.Journal of immigrant and minority health · 2014Pooled it
- Reaching the hard-to-reach: a systematic review of strategies for improving health and medical research with socially disadvantaged groups.BMC medical research methodology · 2014Pooled it
- Recruiting pregnant smokers from Text4baby for a randomized controlled trial of Quit4baby.Translational behavioral medicine · 2017Trial
- A randomized controlled trial of the effectiveness of a pre-recruitment primer letter to increase participation in a study of colorectal screening and surveillance.BMC medical research methodology · 2014Trial
- A randomized trial to assess the effect of a research informational pamphlet on telephone survey completion rates among older Latinos.Contemporary clinical trials · 2012Trial
- Recruitment strategies for caregivers of children with mental health problems.Clinical nurse specialist CNSTrial
- Optimizing patient-reported outcome and risk factor reporting from cancer survivors: a randomized trial of four different survey methods among colorectal cancer survivors.Journal of cancer survivorship : research and practice · 2017Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
backgroundOptimizing participant response rates is important for obtaining representative samples and the timely completion of studies. It is a common practice to use participant incentives to boost response rates, but few studies have systematically examined their effectiveness, particularly among minority groups.
methodsWe experimentally tested three incentive strategies for their effectiveness in improving response rates among colorectal cancer cases (n = 3,816) and their relatives (n = 2,353). A 2 x 2 x 2 factorial design compared (a) registered versus first class mail, (b) $5 cash with the initial mailing (yes/no), and (c) $20 promise (yes/no) upon completion of the information form (for cases) or $10 promise (yes/no) upon completion of the baseline survey (for relatives). Outcome measures were provision of contact information on first-degree relatives for cases and completion of the baseline survey for relatives.
resultsThe response rate among cases was low in all ethnic groups (28-37%) and incentive strategies did not have an effect. Among relatives, the overall baseline survey response rate was 71%, ranging from 66% among Asians to 76% among Whites. Modest absolute increases were observed for payment schedules that included a $5 cash enclosure with the initial mailing in the total sample [odds ratio (OR), 1.65 and 1.47] and among Latinos (OR, 1.94 and 1.74) but not among Asians (OR, 1.61 and 1.55) or African Americans (OR, 1.19 and 1.02). Response rates were not influenced by registered versus first-class mailing.
conclusionThe effects of incentives in this study were modest with some suggestion of differences by ethnic group and type of incentive.
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