Financial incentives to increase stool collection rates for microbiome studies in adult bone marrow transplant patients

Jillian C Thompson, Yi Ren, Kristi Romero, Meagan Lew, Amy T Bush, Julia A Messina, Sin-Ho Jung, Sharareh Siamakpour-Reihani, Julie Miller, Robert R Jenq, Jonathan U Peled, Marcel R M van den Brink, Nelson J Chao, Mark G Shrime and Anthony D Sung

PLOS ONE, 2022, vol. 17, issue 5, 1-12

Abstract: Introduction: In order to study the role of the microbiome in hematopoietic stem cell transplantation (HCT), researchers collect stool samples from patients at various time points throughout HCT. However, stool collection requires active subject participation and may be limited by patient reluctance to handling stool. Methods: We performed a prospective study on the impact of financial incentives on stool collection rates. The intervention group consisted of allogeneic HCT patients from 05/2017-05/2018 who were compensated with a $10 gas gift card for each stool sample. The intervention group was compared to a historical control group of allogeneic HCT patients from 11/2016-05/2017 who provided stool samples before the incentive was implemented. To control for possible changes in collections over time, we also compared a contemporaneous control group of autologous HCT patients from 05/2017-05/2018 with a historical control group of autologous HCT patients from 11/2016-05/2017; neither autologous HCT group was compensated. The collection rate was defined as the number of samples provided divided by the number of time points we attempted to obtain stool. Results: There were 35 allogeneic HCT patients in the intervention group, 19 allogeneic HCT patients in the historical control group, 142 autologous HCT patients in the contemporaneous control group (that did not receive a financial incentive), and 75 autologous HCT patients in the historical control group. Allogeneic HCT patients in the intervention group had significantly higher average overall collection rates when compared to the historical control group allogeneic HCT patients (80% vs 37%, p

Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0267974

DOI: 10.1371/journal.pone.0267974

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