Use of Airtime Incentives to Improve Short Message Service Surveys in Colombia and Tanzania

NCT ID: NCT03768934

Last Updated: 2020-08-11

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

2151 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-02-19

Study Completion Date

2019-04-26

Brief Summary

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This study evaluates the effect of four different airtime incentive amounts on short message service (SMS) survey cooperation, response, refusal and contact rates, as compared to control group, in Colombia and Tanzania.

Detailed Description

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Using random digit dialing (RDD) sampling technique, participants were randomized to one of four airtime incentive amounts contingent on them completing the noncommunicable disease risk factor survey. This mobile phone survey will be sent as a short message service (SMS). In SMS surveys, participants use their touch tone key pad to answer written questions. (i.e. If you are male, press 1; If you are female, press 2). This study will be conducted in both Colombia and Tanzania.

Conditions

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Surveys and Questionnaires Noncommunicable Diseases

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Participants will be randomized to one of four airtime 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.
Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Control

No airtime incentive for completing the survey

Group Type NO_INTERVENTION

No interventions assigned to this group

1X Incentive

1X airtime incentive

Group Type EXPERIMENTAL

1X airtime incentive

Intervention Type OTHER

An incentive given in the form of airtime.

2X incentive

2X airtime incentive

Group Type EXPERIMENTAL

2X airtime Incentive

Intervention Type OTHER

An incentive given in the form of airtime.

Lottery Incentive

Lottery airtime incentive where odds of winning lottery are 1 out of 20

Group Type EXPERIMENTAL

Lottery airtime incentive

Intervention Type OTHER

An incentive given in the form of airtime.

Interventions

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1X airtime incentive

An incentive given in the form of airtime.

Intervention Type OTHER

2X airtime Incentive

An incentive given in the form of airtime.

Intervention Type OTHER

Lottery airtime incentive

An incentive given in the form of airtime.

Intervention Type OTHER

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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The Bloomberg Family Foundation, Inc.

OTHER

Sponsor Role collaborator

Ifakara Health Institute

OTHER

Sponsor Role collaborator

Pontificia Universidad Javeriana

OTHER

Sponsor Role collaborator

Johns Hopkins Bloomberg School of Public Health

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Adnan A Hyder, PhD, MBBS

Role: PRINCIPAL_INVESTIGATOR

Johns Hopkins University Bloomberg School of Public Health

George W Pariyo, PhD

Role: PRINCIPAL_INVESTIGATOR

Johns Hopkins University Bloomberg School of Public Health

Locations

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Instituto de Salud Publica Pontificia Universidad Javeriana

Bogotá, D.C., Colombia

Site Status

Ifakara Health Institute

Dar es Salaam, , Tanzania

Site Status

Countries

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Colombia Tanzania

References

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Gibson DG, Pariyo GW, Wosu AC, Greenleaf AR, Ali J, Ahmed S, Labrique AB, Islam K, Masanja H, Rutebemberwa E, Hyder AA. Evaluation of Mechanisms to Improve Performance of Mobile Phone Surveys in Low- and Middle-Income Countries: Research Protocol. JMIR Res Protoc. 2017 May 5;6(5):e81. doi: 10.2196/resprot.7534.

Reference Type BACKGROUND
PMID: 28476729 (View on PubMed)

Gibson DG, Pereira A, Farrenkopf BA, Labrique AB, Pariyo GW, Hyder AA. Mobile Phone Surveys for Collecting Population-Level Estimates in Low- and Middle-Income Countries: A Literature Review. J Med Internet Res. 2017 May 5;19(5):e139. doi: 10.2196/jmir.7428.

Reference Type BACKGROUND
PMID: 28476725 (View on PubMed)

Gibson DG, Farrenkopf BA, Pereira A, Labrique AB, Pariyo GW. The Development of an Interactive Voice Response Survey for Noncommunicable Disease Risk Factor Estimation: Technical Assessment and Cognitive Testing. J Med Internet Res. 2017 May 5;19(5):e112. doi: 10.2196/jmir.7340.

Reference Type BACKGROUND
PMID: 28476724 (View on PubMed)

Hyder AA, Wosu AC, Gibson DG, Labrique AB, Ali J, Pariyo GW. Noncommunicable Disease Risk Factors and Mobile Phones: A Proposed Research Agenda. J Med Internet Res. 2017 May 5;19(5):e133. doi: 10.2196/jmir.7246.

Reference Type BACKGROUND
PMID: 28476722 (View on PubMed)

Other Identifiers

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00007318-4.2

Identifier Type: -

Identifier Source: org_study_id

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