This study evaluates the effect of two different airtime incentive amounts on interactive voice response (IVR) survey cooperation, response, refusal, and contact rates, as compared to control group, in Bangladesh and Uganda.
Using random digit dialing sampling techniques, the investigators randomized random digit dialed (RDD) participants to one of three airtime incentive amounts contingent on them completing the noncommunicable disease risk factor survey. This mobile phone survey was sent as an interactive voice response (IVR). In IVR surveys, participants use their touch tone key pad to answer pre-recorded questions. (i.e. If you are male, press 1; If you are female, press 2). This study was conducted in both Bangladesh and Uganda
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
4,233
an incentive given in the form of airtime to motivate participants to complete the survey. Participants were given 50 Bangladeshi Taka ($0.60 USD) or 5000 Ugandan Shillings (UGX; $1.35 USD as of April 3, 2018) worth of airtime for completing the survey
an incentive given in the form of airtime to motivate participants to complete the survey. Participants were given 100 Bangladeshi Taka ($1.20 USD) or 10000 UGX ($2.70 USD) worth of airtime for completing the survey
Institute of Epidemiology Disease Control and Research
Dhaka, Bangladesh
Makerere University School of Public Health
Kampala, Uganda
Cooperation Rate #1
As defined by American Association for Public Opinion Research,the number of complete interviews divided by the sum of complete interviews, partial interviews, refusals, and breakoffs
Time frame: Through study completion, an average of one month
Response Rate #4
As defined by American Association for Public Opinion Research,the number of complete and partial interviews divided by the sum of complete interviews, partial interviews, refusals, breakoffs, and the estimated eligible proportion of unknowns
Time frame: Through study completion, an average of one month
Refusal Rate #2
As defined by American Association for Public Opinion Research,the number of refusals and break-offs divided by the number of complete interviews, partial interviews, refusals, breakoffs, and the estimated eligible proportion of unknowns
Time frame: Through study completion, an average of one month
Contact Rate #2
As defined by American Association for Public Opinion Research,the number of complete and partial interviews, refusals and break-offs divided by the number of complete interviews, partial interviews, refusals, breakoffs, and the estimated eligible proportion of unknowns
Time frame: Through study completion, an average of one month
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