Use of Airtime Amounts to Improve Interactive Voice Response Surveys in Colombia and Tanzania
Clinical trial NCT03772470 · COMPLETED
Trial details
- NCT number
- NCT03772470
- Sponsor
- Johns Hopkins Bloomberg School of Public Health
- Status
- COMPLETED
- Phase
- Not Applicable
- Study type
- INTERVENTIONAL
- Start date
- 2018-08-09
- Primary completion
- 2018-11-13
- Enrollment
- 4723
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