Promised and Lottery Airtime Incentives to Improve Interactive Voice Response Survey Participation Among Adults in Bangladesh and Uganda: Randomized Controlled Trial
Journal of Medical Internet Research
; 2022.
Article
in English
| ProQuest Central | ID: covidwho-1870861
ABSTRACT
Background:
Increased mobile phone penetration allows the interviewing of respondents using interactive voice response surveys in low- and middle-income countries. However, there has been little investigation of the best type of incentive to obtain data from a representative sample in these countries.Objective:
We assessed the effect of different airtime incentives options on cooperation and response rates of an interactive voice response survey in Bangladesh and Uganda.Methods:
The open-label randomized controlled trial had three arms (1) no incentive (control), (2) promised airtime incentive of 50 Bangladeshi Taka (US $0.60;1 BDT is approximately equivalent to US $0.012) or 5000 Ugandan Shilling (US $1.35;1 UGX is approximately equivalent to US $0.00028), and (3) lottery incentive (500 BDT and 100,000 UGX), in which the odds of winning were 120. Fully automated random-digit dialing was used to sample eligible participants aged ≥18 years. The risk ratios (RRs) with 95% confidence intervals for primary outcomes of response and cooperation rates were obtained using log-binomial regression.Results:
Between June 14 and July 14, 2017, a total of 546,746 phone calls were made in Bangladesh, with 1165 complete interviews being conducted. Between March 26 and April 22, 2017, a total of 178,572 phone calls were made in Uganda, with 1248 complete interviews being conducted. Cooperation rates were significantly higher for the promised incentive (Bangladesh 39.3%;RR 1.38, 95% CI 1.24-1.55, P<.001;Uganda 59.9%;RR 1.47, 95% CI 1.33-1.62, P<.001) and the lottery incentive arms (Bangladesh 36.6%;RR 1.28, 95% CI 1.15-1.45, P<.001;Uganda 54.6%;RR 1.34, 95% CI 1.21-1.48, P<.001) than those for the control arm (Bangladesh 28.4%;Uganda 40.9%). Similarly, response rates were significantly higher for the promised incentive (Bangladesh 26.5%%;RR 1.26, 95% CI 1.14-1.39, P<.001;Uganda 41.2%;RR 1.27, 95% CI 1.16-1.39, P<.001) and lottery incentive arms (Bangladesh 24.5%%;RR 1.17, 95% CI 1.06-1.29, P=.002;Uganda 37.9%%;RR 1.17, 95% CI 1.06-1.29, P=.001) than those for the control arm (Bangladesh 21.0%;Uganda 32.4%).Conclusions:
Promised or lottery airtime incentives improved survey participation and facilitated a large sample within a short period in 2 countries. Trial Registration ClinicalTrials.gov NCT03773146;http//clinicaltrials.gov/ct2/show/NCT03773146
Medical Sciences--Computer Applications; mobile phone survey; interactive voice response survey; survey; interactive voice response; non-communicable disease; surveillance; airtime incentive; response rate; cooperation rate; communicable disease; Uganda; Bangladesh; low income; middle income; LMIC; Africa; incentive; RCT; randomized controlled trial; lottery; cooperation; participation; Polls & surveys; Diabetes; Disease; Risk factors; Incentives; Automation; Clinical trials; Mobile phones; COVID-19; Consent; Cellular telephones; Age; Multimedia; Interviews; Low income groups; Hypertension; Response rates; Public health; Penetration; Data collection; High income; Text messaging; United States--US
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Collection:
Databases of international organizations
Database:
ProQuest Central
Type of study:
Experimental Studies
/
Observational study
/
Randomized controlled trials
Language:
English
Journal:
Journal of Medical Internet Research
Year:
2022
Document Type:
Article
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