Use of Airtime Timing to Improve Interactive Voice Response Surveys in Bangladesh and Uganda

Study Overview
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Brief Summary
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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
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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.

Official Title
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A Randomized Controlled Trial of Varying Airtime Incentive Timing to Improve Interactive Voice Response (IVR) Survey Performance in Bangladesh and Uganda

Conditions
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Surveys and Questionnaires, Noncommunicable Diseases

Intervention / Treatment
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* Other: Pre-survey incentive
* Other: Post-survey incentive


Participation Criteria
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Eligibility Criteria
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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

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Participants were randomized to one of three airtime incentive timings: 1) no incentive; 2) 0.1X incentive received before the IVR noncommunicable disease risk factor survey is sent, followed by 1X incentive upon completing the survey; or 3) 1X incentive received upon completing the survey.
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: Control<br>No Airtime Incentive was given for completing the survey | |
| Experimental: Pre-survey incentive<br>0.1X incentive before the survey, 1X afterwards | Other: Pre-survey incentive<br>* An incentive of is given in the form of airtime to motivate participants to complete the survey. Participants were sent 0.1X before the were sent a mobile phone survey and an additional 1X after completing the survey.<br>|
| Experimental: Post-survey incentive<br>1X incentive after the survey | Other: Post-survey incentive<br>* An incentive in the form of airtime to motivate participants to complete the survey. Participants were given Bangladeshi Taka or Ugandan Shillings worth of certain airtime for completing the survey.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Cooperation 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 | 
| 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 Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 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 | 
| 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 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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mobile phone surveys, interactive voice response, incentive