Comparison of SMS and IVR Surveys in Tanzania

Not Applicable

Completed

• Conditions: Surveys and Questionnaires; Noncommunicable Diseases
• Interventions: Other: IVR survey; Other: SMS survey

• Registration Number: NCT04506918
• Lead Sponsor: Johns Hopkins Bloomberg School of Public Health

Brief Summary

This study focuses on mechanisms to adapt the performance of interactive voice response (IVR) and short message service (SMS) surveys conducted in low-and middle-income (LMIC) setting (Tanzania) and evaluates how the two survey modalities (IVR and SMS) affect survey metrics, including response, completion and attrition rates.

Detailed Description

Using random digit dialing (RDD) sampling technique, participants will be randomized to one of two arms : 1) IVR or 2) SMS. Participants in the first study arm will receive an IVR survey. Participants in the second study arm will receive a SMS survey. The IVR and SMS questionnaires contain a set of demographic questions and one non-communicable disease (NCD) module (alcohol, or tobacco, or diet, or physical activity, or blood pressure and diabetes). We will examine contact, response, refusal and cooperation rates and demographic representativeness by each study arm.

Study Timeline

• Study First Submitted: 2020-08-07
• Study First Submitted QC: 2020-08-07
• Study First Posted: 2020-08-10
• Study Start: 2020-10-23
• Primary Completion: 2021-04-30
• Study Completion: 2021-04-30
• Status Verified: 2022-04
• Last Update Submitted: 2022-04-25
• Last Update Posted: 2022-04-26

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 6483

Inclusion Criteria

• Access to a mobile phone
• Greater or equal to 18 years of age
• Conversant in the Swahili language

Exclusion Criteria

• Less than 18 years of age

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
IVR survey	IVR survey	Participants will receive an IVR survey
SMS survey	SMS survey	Participants will receive an SMS survey

Primary Outcome Measures

Name	Time	Method
Response Rate #4	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 the number of participants with complete interviews, P is the number of participants with partial interviews, R is the number of participants with refusals and breakoffs, and eU is the estimated eligible proportion of unknowns
Cooperation Rate #1	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 the number of participants with complete interviews, P is the number of participants with partial interviews, and R is the number of participants with refusals and breakoffs.

Secondary Outcome Measures

Name	Time	Method
Refusal Rate #2	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 the number of participants with refusals and breakoffs, I is the number of participants with complete interviews, P is the number of participants with partial interviews, and eU is the estimated eligible proportion of unknowns
Contact Rate #2	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 the number of participants with complete interviews, P is the number of participants with partial interviews, R is the number of participants with refusals and breakoffs, and eU is the estimated eligible proportion of unknowns

Trial Locations

Locations (1)

Ifakara Health Institute; 🇹🇿 Dar Es Salaam, Tanzania