A Randomized Controlled Trial of Varying Airtime Incentive Timing to Improve Interactive Voice Response (IVR) Survey Performance in Bangladesh and Uganda
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Enrollment
- 2,287
- Locations
- 2
- Primary Endpoint
- Response Rate #4
Study Overview
Brief Summary
This study evaluates the effect of two different airtime incentive timings on interactive voice response (IVR) survey cooperation, response, refusal and contact rates, as compared to a control group, in Bangladesh and Uganda.
Detailed Description
Using random digit dialing sampling techniques, the study randomized RDD participants to one of three airtime incentive timings, some of all of that incentive being contingent on their 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 Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Other
- Masking
- Single (Outcomes Assessor)
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Access to a mobile phone
- •Greater or equal to 18 years of age
- •In Bangladesh, conversant in either English or Bangla language. In Uganda, conversant in either Luo, Luganda, Runyakitara, or English languages.
Exclusion Criteria
- •Less than 18 years of age
Arms & Interventions
Control
No Airtime Incentive was given for completing the survey
Pre-survey incentive
0.1X incentive before the survey, 1X afterwards
Intervention: Pre-survey incentive (Other)
Post-survey incentive
1X incentive after the survey
Intervention: Post-survey incentive (Other)
Outcomes
Primary Outcomes
Response Rate #4
Time Frame: Through study completion, an average of one month
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
Cooperation Rate #1
Time Frame: Through study completion, an average of one month
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.
Secondary Outcomes
- Refusal Rate #2(Through study completion, an average of one month)
- Contact Rate #2(Through study completion, an average of one month)