Use of Airtime Incentives to Improve Short Message Service Surveys in Colombia and Tanzania
Clinical trial NCT03768934 · COMPLETED
Trial details
- NCT number
- NCT03768934
- Sponsor
- Johns Hopkins Bloomberg School of Public Health
- Status
- COMPLETED
- Phase
- Not Applicable
- Study type
- INTERVENTIONAL
- Start date
- 2019-02-19
- Primary completion
- 2019-04-26
- Enrollment
- 2151
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