Comparison of SMS, IVR, and CATI Surveys in Colombia

Study Overview
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Brief Summary
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The objective of the study is to adapt and assess the feasibility, quality, and validity of short message service or 'text message' (SMS), interactive voice response (IVR), and computer assisted telephone interviews (CATI) for collecting information on noncommunicable disease (NCD) risk factors

Detailed Description
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Using random digit dialing (RDD) sampling technique, RDD participants will be randomized to one of the three arms: 1) SMS or 2) IVR or 3) CATI. Participants in the first study arm will receive an SMS survey. Participants in the second study arm will receive a IVR survey. Participants in the third study arm will receive a CATI survey. The IVR, SMS and CATI questionnaires contain a set of demographic questions and one NCD module (alcohol, or tobacco, or diet, or physical activity, or blood pressure and diabetes). The investigators will examine contact, response, refusal and cooperation rates and demographic representativeness by each study arm.

Official Title
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Comparison of Short Message Service (SMS), Interactive Voice Response (IVR), and Computer Assisted Telephone Interview (CATI) Mobile Phone Surveys for Non-communicable Disease Risk Factor Surveillance in Colombia

Conditions
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Surveys and Questionnaires, Noncommunicable Diseases

Intervention / Treatment
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* Other: SMS Survey
* Other: IVR Survey
* Other: CATI Survey


Participation Criteria
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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 Exclusion Criteria: Less than 18 years of age

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Participants were randomized to one of three mobile phone survey modalities: 1) SMS; 2) IVR; 3) CATI.
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Short Message Service (SMS) survey<br>Participants will receive an SMS survey | Other: SMS Survey<br>* Participants will receive a SMS survey<br>|
| Experimental: Interactive Voice Response (IVR) survey<br>Participants will receive an IVR survey | Other: IVR Survey<br>* Participants will receive an IVR survey<br>|
| Experimental: Computer Assisted Telephone Interviews (CATI) survey<br>Participants will receive a CATI survey | Other: CATI Survey<br>* Participants will receive a CATI survey<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Cooperation Rate #1 | 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. | Through study completion, an average of one month | 
| Response Rate #4 | 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 | Through study completion, an average of one month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Refusal Rate #2 | 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 | Through study completion, an average of one month | 
| Contact Rate #2 | 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 | Through study completion, an average of one month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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mobile phone surveys, interactive voice response, computer assisted telephone interview, short message service, non-communicable diseases