Abstract
Recruiting pregnant smokers into clinical trials is challenging since this population tends to be disadvantaged, the behavior is stigmatized, and the intervention window is limited. The purpose of this study is to test the feasibility and effectiveness of recruiting pregnant smokers into a smoking cessation trial by sending recruitment text messages to an existing subscriber list. Recruitment messages were sent to subscribers flagged as pregnant in Text4baby, a national text messaging program for pregnant women and mothers. Four recruitment messages were rotated to test the effectiveness of different emotional frames and a financial incentive. Study staff called subscribers who expressed interest to screen for eligibility and enroll eligible women. Between October 6, 2015 and February 2, 2016, 10,194 recruitment messages were sent to Text4baby subscribers flagged as pregnant, and 10.18% (1038) responded indicating interest. No significant increase in cancellation was observed compared to subscribers who received other ad hoc messages. Of respondents, 54.05% (561) were reached by phone for follow-up, and 21.97% (228) were found to be eligible. Among the eligible, 87% (199) pregnant smokers enrolled. The recruitment message with a pride emotional appeal had a significantly higher response (p = 0.02) compared to the recruitment message with no emotional appeal, but enrollment did not significantly differ between recruitment messages with different emotional appeals. The recruitment messages with a reference to financial incentive yielded higher response (p < 0.01) and enrollment (p = 0.03) compared to a recruitment message without. This study demonstrates success recruiting pregnant smokers using text message. Future studies should consider building on this approach for recruiting high-risk populations.
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Acknowledgments
The authors would like to thank the George Washington University Research Assistants Dasha Afanaseva MPH, Laura Macherelli MPH, Shelby Fallon MPH, Shawn Chiang, and Nisha Radhakrishnan for following through with the recruitment process over the phone. We would also like to thank Ada Obi, Lalida Thaweethai MPH, Diana Zuskov of Voxiva, and Amy Pirretti of ZERO TO THREE for their contributions to developing and implementing the recruitment plan.
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The recruitment protocol was approved by the George Washington University Institutional Review Board.
Comments to the editor
The findings reported have not been previously published and this manuscript is not being simultaneously submitted elsewhere. Preliminary findings were presented at the Society of Behavioral Medicine’s 37th Annual Meeting in March 2016. The authors have full control of all primary data and agree to allow the journal to review their data if requested.
Funding
Research reported in this publication was supported by the National Institute on Drug Abuse of the National Institutes of Health under Award Number R44DA035017. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
Conflicts of interest
Dr. Lorien Abroms has stock options in Voxiva, Inc. and has licensed Quit4Baby and Text2Quit to Voxiva, Inc. Dr. Pamela Johnson and Indira Singh are currently employed by Voxiva, Inc., and Jessica Bushar is employed by ZERO TO THREE, a partner operating the Text4baby service.
Statement of human rights
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1975 Helsinki Declaration and its later amendments or comparable ethical standards. Animal experimental subjects were not used in this research.
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Informed consent was obtained from all individual participants included in the study.
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Implications
Practice: An outreach recruitment text message sent to an existing text messaging subscriber list is a novel way to recruit pregnant smokers for a clinical trial.
Policy: Government programs such as Medicaid and other health plans may consider using text messages to identify and reach high-risk populations.
Research: Future research should consider building on the use of text message for recruiting at risk populations for future trials and established treatment programs.
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Leavitt, L., Abroms, L., Johnson, P. et al. Recruiting pregnant smokers from Text4baby for a randomized controlled trial of Quit4baby. Behav. Med. Pract. Policy Res. 7, 157–165 (2017). https://doi.org/10.1007/s13142-016-0450-4
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DOI: https://doi.org/10.1007/s13142-016-0450-4