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Completed

NCT Number: NCT04506918

Comparison of SMS and IVR Surveys in Tanzania

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.

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Key information

Conditions

Surveys and Questionnaires Disease Attributes Noncommunicable Diseases Pathologic Processes Pathological Conditions, Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Ifakara Health Institute

Dar es Salaam, Tanzania

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

IVR Survey

Other

Participants will receive an IVR survey

SMS Survey

Other

Participants will receive a SMS survey

Primary outcomes

  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 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.

  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 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

Secondary outcomes

  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 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

  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 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

Sponsors and collaborators

Lead sponsor

Johns Hopkins Bloomberg School of Public Health

Other

Collaborators

  • Ifakara Health Institute

Registry information

Official study title

Comparison of Short Message Service (SMS) and Interactive Voice Response (IVR) Mobile Phone Surveys for Non-communicable Disease Risk Factor Surveillance in Tanzania

Important dates

Study start
2020
Primary completion
2021
Study completion
2021
First posted
Aug 10, 2020
Registry last updated
Apr 26, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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