Use of Airtime Incentives to Improve Short Message Service Surveys in Colombia and Tanzania

Surveys and Questionnaires Clinical Trial

Official title:

A Randomized Controlled Trial of Airtime Incentives to Improve Short Message Service (SMS) Survey Performance in Colombia and Tanzania

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03768934
• Other study ID #: 00007318-4.2
• Status: Completed
• Phase: N/A
• Start date: February 19, 2019
• Est. completion date: April 26, 2019

Study information

• Verified date: August 2020
• Source: Johns Hopkins Bloomberg School of Public Health
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 2151
• Est. completion date: April 26, 2019
• Est. primary completion date: April 26, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

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

Related Conditions & MeSH terms

• Noncommunicable Diseases
• Surveys and Questionnaires

Intervention

Other:
• 1X airtime incentive
An incentive given in the form of airtime.
• 2X airtime Incentive
An incentive given in the form of airtime.
• Lottery airtime incentive
An incentive given in the form of airtime.

Locations

Country	Name	City	State
Colombia	Instituto de Salud Publica Pontificia Universidad Javeriana	Bogota	D.c.
Tanzania	Ifakara Health Institute	Dar Es Salaam

Sponsors (4)

Lead Sponsor	Collaborator
Johns Hopkins Bloomberg School of Public Health	Ifakara Health Institute, Pontificia Universidad Javeriana, The Bloomberg Family Foundation, Inc.

Countries where clinical trial is conducted

Colombia,  Tanzania, 

References & Publications (4)

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. — View 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. — View 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. Review. — View 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. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Cooperate Rate #1	As defined by American Association for Public Opinion Research, cooperation rate is defined as I/(I+P+R) where I is complete interviews, P is partial interviews, and R is refusals and breakoffs.	Through study completion, an average of one month
Primary	Response Rate #4	As defined by American Association for Public Opinion Research, response rate is defined as (I+P)/(I+P+R+eU) where I is complete interviews, P is partial interviews, R is refusals and breakoffs, and eU is the estimated eligible proportion of unknowns.	Through study completion, an average of one month
Secondary	Refusal Rate #2	As defined by American Association for Public Opinion Research, refusal rate is defined as (R)/(I+P+R+eU) where R is refusals and breakoffs, I is complete interviews, P is partial interviews, and eU is the estimated eligible proportion of unknowns.	Through study completion, an average of one month
Secondary	Contact Rate #2	As defined by American Association for Public Opinion Research, contact rate is defined as (I+P+R)/(I+P+R+eU) where I is complete interviews, P is partial interviews, R is refusals and breakoffs, and eU is the estimated eligible proportion of unknowns.	Through study completion, an average of one month