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Currently submitted to: Journal of Medical Internet Research

Date Submitted: May 1, 2026
Open Peer Review Period: May 3, 2026 - Jun 28, 2026
(currently open for review)
Peer Review Me

Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.

Study population consequences of the opt-in requirement for clinical trials using text messaging

  • Stacie Daugherty; 
  • Glenn Goodrich; 
  • Joy Waughtal; 
  • Catia Chavez; 
  • Cathryn Perreira; 
  • Sylvie Novins-Montague; 
  • Thomas J. Glorioso; 
  • P. Michael Ho; 
  • Sheana Bull

ABSTRACT

This research letter describes how the opt-in requirement federal regulations for text messaging influenced the study population of those who opted-in or opted-out of a clinical trial using text messages to improve cardiovascular (CV) health.


 Citation

Please cite as:

Daugherty S, Goodrich G, Waughtal J, Chavez C, Perreira C, Novins-Montague S, Glorioso TJ, Ho PM, Bull S

Study population consequences of the opt-in requirement for clinical trials using text messaging

JMIR Preprints. 01/05/2026:100043

DOI: 10.2196/preprints.100043

URL: https://preprints.jmir.org/preprint/100043

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