Use of Airtime Amounts to Improve Interactive Voice Response Surveys in Colombia and Tanzania

NCT03772470 · clinicaltrials.gov ↗

NA

Phase

COMPLETED

Status

4723

Enrollment

OTHER

Sponsor class

Conditions

Surveys and Questionnaires
Noncommunicable Diseases

Interventions

OTHER: 1X airtime incentive
OTHER: 2X airtime incentive
OTHER: Lottery airtime incentive

Sponsor

Johns Hopkins Bloomberg School of Public Health

Collaborators

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