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Use of Airtime Amounts to Improve Interactive Voice Response Surveys in Colombia and Tanzania

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03772470
Recruitment Status : Completed
First Posted : December 11, 2018
Last Update Posted : December 11, 2018
Sponsor:
Collaborators:
The Bloomberg Family Foundation, Inc.
Ifakara Health Institute
Pontificia Universidad Javeriana
Information provided by (Responsible Party):
Johns Hopkins Bloomberg School of Public Health

Brief Summary:
This study evaluates the effect of three different airtime incentive amounts on interactive voice response (IVR) survey cooperation, response, refusal and contact rates, as compared to control group, in Colombia and Tanzania.

Condition or disease Intervention/treatment Phase
Surveys and Questionnaires Noncommunicable Diseases Other: 1X airtime incentive Other: 2X airtime incentive Other: Lottery airtime incentive Not Applicable

Detailed Description:
Using random digit dialing (RDD) sampling technique, participants were randomized one of four airtime incentive amounts contingent on them completing the noncommunicable disease risk factor survey. 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, pres 1; If you are female, press 2). This study will be conducted in both Colombia and Tanzania.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 4723 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: Participants will be randomized to one of four airtime incentive amounts: 1) no incentive; 2) 1X incentive; 3) 2X incentive or 4) a lottery incentive, in which one out of every 20 participants will receive the incentive. Airtime incentives were sent if participants completed the noncommunicable disease risk factor survey.
Masking: Single (Outcomes Assessor)
Primary Purpose: Other
Official Title: A Randomized Controlled Trial of Varying Airtime Amounts to Improve Interactive Voice Response (IVR) Survey Performance in Colombia and Tanzania
Actual Study Start Date : August 9, 2018
Actual Primary Completion Date : November 13, 2018
Actual Study Completion Date : November 13, 2018

Arm Intervention/treatment
No Intervention: Control
No airtime incentive was given for completing the survey
Experimental: 1X Incentive
1X airtime incentive
Other: 1X airtime incentive
An incentive given in the form of airtime

Experimental: 2X incentive
2X airtime incentive
Other: 2X airtime incentive
An incentive given in the form of airtime

Experimental: Lottery Incentive
Lottery airtime incentive given to one in 20 participants
Other: Lottery airtime incentive
An incentive given in the form of airtime




Primary Outcome Measures :
  1. 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.

  2. 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


Secondary Outcome Measures :
  1. Refusal Rate #2 [ Time Frame: Through study completion, an average of one month ]
    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

  2. Contact Rate #2 [ Time Frame: Through study completion, an average of one month ]
    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



Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Access to a mobile phone
  • Greater or equal to 18 years of age
  • In Colombia, conversant in the Spanish language. In Tanzania, conversant in the Swahili language.

Exclusion Criteria:

  • Less than 18 years of age

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03772470


Locations
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Colombia
Instituto de Salud Publica Pontificia Universidad Javeriana
Bogota, D.c., Colombia
Tanzania
Ifakara Health Institute
Dar Es Salaam, Tanzania
Sponsors and Collaborators
Johns Hopkins Bloomberg School of Public Health
The Bloomberg Family Foundation, Inc.
Ifakara Health Institute
Pontificia Universidad Javeriana
Investigators
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Principal Investigator: Adnan A Hyder, PhD, MBBS Johns Hopkins University Bloomberg School of Public Health
Principal Investigator: George W. Pariyo, PhD Johns Hopkins University Bloomberg School of Public Health
Publications:
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Responsible Party: Johns Hopkins Bloomberg School of Public Health
ClinicalTrials.gov Identifier: NCT03772470    
Other Study ID Numbers: 00007318-4.1
First Posted: December 11, 2018    Key Record Dates
Last Update Posted: December 11, 2018
Last Verified: December 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Johns Hopkins Bloomberg School of Public Health:
mobile phone surveys
interactive voice response
incentive
Additional relevant MeSH terms:
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Noncommunicable Diseases
Chronic Disease
Disease Attributes
Pathologic Processes