Clinical trial NCT03768934: Use of Airtime Incentives to Improve Short Message Service Surveys in Colombia and Tanzania
Official title: A Randomized Controlled Trial of Airtime Incentives to Improve Short Message Service (SMS) Survey Performance in Colombia and Tanzania
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Surveys and Questionnaires
Noncommunicable Diseases
Keywords: mobile phone surveys
short message service
incentive
Lead sponsor: Johns Hopkins Bloomberg School of Public Health
Sponsor class: OTHER
Collaborators: name: The Bloomberg Family Foundation, Inc.
name: Ifakara Health Institute
name: Pontificia Universidad Javeriana
First posted: 2018-12-07
Enrollment: 2151
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Participants will be randomized to one of four airtime amounts: 1) no incentive; 2) 1X incentive; 3) 2X incentive or 4) a lottery incentive, in which one out of every 20 participants will receive the incentive.
Primary purpose: OTHER

Brief summary: This study evaluates the effect of four different airtime incentive amounts on short message service (SMS) survey cooperation, response, refusal and contact rates, as compared to control group, in Colombia and Tanzania.

Detailed description: Using random digit dialing (RDD) sampling technique, participants were randomized to one of four airtime incentive amounts contingent on them completing the noncommunicable disease risk factor survey. This mobile phone survey will be sent as a short message service (SMS). In SMS surveys, participants use their touch tone key pad to answer written questions. (i.e. If you are male, press 1; If you are female, press 2). This study will be conducted in both Colombia and Tanzania.

Eligibility criteria: Inclusion Criteria:

* Access to a mobile phone
* Greater or equal to 18 years of age
* In Colombia, conversant in the Spanish language. In Tanzania, conversant in the Swahili language.

Exclusion Criteria:

* Less than 18 years of age

Primary outcomes:
measure: Cooperate Rate #1
timeFrame: Through study completion, an average of one month
measure: Response Rate #4
timeFrame: Through study completion, an average of one month
Secondary outcomes:
measure: Refusal Rate #2
timeFrame: Through study completion, an average of one month
measure: Contact Rate #2
timeFrame: Through study completion, an average of one month
Other outcomes:
Locations:
city: Bogota
country: Colombia
facility: Instituto de Salud Publica Pontificia Universidad Javeriana
state: D.c.
city: Dar Es Salaam
country: Tanzania
facility: Ifakara Health Institute
Study officials:
affiliation: Johns Hopkins University Bloomberg School of Public Health
name: Adnan A Hyder, PhD, MBBS
role: PRINCIPAL_INVESTIGATOR
affiliation: Johns Hopkins University Bloomberg School of Public Health
name: George W Pariyo, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Gibson DG, Pariyo GW, Wosu AC, Greenleaf AR, Ali J, Ahmed S, Labrique AB, Islam K, Masanja H, Rutebemberwa E, Hyder AA. Evaluation of Mechanisms to Improve Performance of Mobile Phone Surveys in Low- and Middle-Income Countries: Research Protocol. JMIR Res Protoc. 2017 May 5;6(5):e81. doi: 10.2196/resprot.7534.
citation: Gibson DG, Pereira A, Farrenkopf BA, Labrique AB, Pariyo GW, Hyder AA. Mobile Phone Surveys for Collecting Population-Level Estimates in Low- and Middle-Income Countries: A Literature Review. J Med Internet Res. 2017 May 5;19(5):e139. doi: 10.2196/jmir.7428.
citation: Gibson DG, Farrenkopf BA, Pereira A, Labrique AB, Pariyo GW. The Development of an Interactive Voice Response Survey for Noncommunicable Disease Risk Factor Estimation: Technical Assessment and Cognitive Testing. J Med Internet Res. 2017 May 5;19(5):e112. doi: 10.2196/jmir.7340.
citation: Hyder AA, Wosu AC, Gibson DG, Labrique AB, Ali J, Pariyo GW. Noncommunicable Disease Risk Factors and Mobile Phones: A Proposed Research Agenda. J Med Internet Res. 2017 May 5;19(5):e133. doi: 10.2196/jmir.7246.