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.
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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
3,786
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.
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.
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.
Instituto de Salud Publica Pontificia Universidad Javeriana
Bogotá, D.C., Colombia
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 number 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 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
Refusal Rate #2
As defined by American Association for Public Opinion Research, the number of refusals and breakoffs 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 breakoffs 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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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.