NCT04394520

Use of Consent Language and Mode to Improve Interactive Voice Response Survey in Colombia and Uganda

A Randomized Controlled Trial of Varying Consent Language and Mode to Improve Interactive Voice Response (IVR) Survey Performance in Colombia and Uganda

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 3,786 (actual)
• Sponsor: Johns Hopkins Bloomberg School of Public Health · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

This study evaluates the effect of one new form of introduction language and three new modes of providing consent on interactive voice response (IVR) survey cooperation, response, refusal and contact rates, as compared to control group, in Colombia and Uganda.

Detailed description

Using random digit dialing (RDD) sampling technique, RDD participants will be randomized to one of five introduction and consent combinations and then have them complete noncommunicable disease risk factor survey with an additional module regarding their understanding of the survey and of its voluntariness. This mobile phone survey will be 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 will be conducted in both Colombia and Uganda.

Conditions

• Surveys and Questionnaires
• Noncommunicable Diseases

Interventions

Type	Name	Description
OTHER	Modified Introduction	A variation in the introductory content to motivate participants to complete the survey. Participants will be presented with modified introductory language based on the findings from local focus groups and key informant interviews.
OTHER	Active Opt-in	A variation in the consent mode to motivate participants to complete the survey. Participants will be given the choice to actively opt-in to the survey, if they do not respond, the survey will terminate.
OTHER	Active Opt-out	A variation in the consent mode to motivate participants to complete the survey. Participants will be given the choice to actively opt-out to the survey, if they do not respond, the survey will continue.
OTHER	Passive Opt-in	A variation in the consent mode to motivate participants to complete the survey. Participants will be given the choice to passively opt-in to the survey, if they do not hang-up, the survey will continue.

Timeline

• Start date: 2018-08-31
• Primary completion: 2019-01-05
• Completion: 2019-01-05
• First posted: 2020-05-19
• Last updated: 2020-05-19

Locations

2 sites across 2 countries: Colombia, Uganda