Published on in Vol 9 (2025)

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/65150, first published .
Design of an Automated Mobile Phone-Based Reminder and Incentive System: Application in a Quasi-Randomized Controlled Trial to Improve the Timeliness of Childhood Vaccinations in Tanzania

Design of an Automated Mobile Phone-Based Reminder and Incentive System: Application in a Quasi-Randomized Controlled Trial to Improve the Timeliness of Childhood Vaccinations in Tanzania

Design of an Automated Mobile Phone-Based Reminder and Incentive System: Application in a Quasi-Randomized Controlled Trial to Improve the Timeliness of Childhood Vaccinations in Tanzania

Marco van Zwetselaar   1 * , MSc ;   Jan Ostermann   2 * , PhD ;   Melkiory Beti   3 , BBIT ;   Joy Noel Baumgartner   4 , MSSW, PhD ;   Sayoki Mfinanga   5 , MD, PhD ;   Esther Ngadaya   5 , MD, PhD ;   Lavanya Vasudevan   6 , MPH, CPH, PhD ;   Nathan Thielman   7 , MD, MPH

1 Zwets IT, Harskamp, The Netherlands

2 Department of Health Services Policy and Management, Arnold School of Public Health, University of South Carolina, Columbia, SC, United States

3 Kilimanjaro Clinical Research Institute, Moshi, United Republic of Tanzania

4 School of Social Work, University North Carolina, Chapel Hill, NC, United States

5 National Institute for Medical Research, Dar es Salaam, United Republic of Tanzania

6 Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA, United States

7 Department of Medicine, Duke Global Health Institute, Duke University, Durham, NC, United States

*these authors contributed equally

Corresponding Author:

  • Jan Ostermann, PhD
  • Department of Health Services Policy and Management
  • Arnold School of Public Health, University of South Carolina
  • 915 Greene St
  • Columbia, SC 29208
  • United States
  • Phone: 1 8037778747
  • Email: jano@mailbox.sc.edu