Non Communicable Diseases, Surveys and Questionnaires
Conditions
Keywords
mobile phone surveys, interactive voice response
Brief summary
This study focuses on mechanisms to adapt the performance of interactive voice response (IVR) and computer assisted telephone interviews (CATI) surveys conducted in low-and middle-income (LMIC) setting (Bangladesh) and evaluates how the two survey modalities (IVR and CATI) 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) CATI. Participants in the first study arm will receive an IVR survey. Participants in the second study arm will receive a CATI survey. Each questionnaire contains 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.
Interventions
Sponsors
Institute of Epidemiology, Disease Control and Research
Johns Hopkins Bloomberg School of Public Health
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)
Masking description
Data cleaning and analysis will be conducted by a statistician blinded to the study arm
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Access to a mobile phone * Greater or equal to 18 years of age * In Bangladesh, conversant in Bengali language
Exclusion criteria
* Less than 18 years of age
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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 complete interviews, P is partial interviews, and R is refusals and breakoffs |
| 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
| Measure | Time frame | Description |
|---|---|---|
| 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 complete interviews, P is partial interviews, R is refusals and breakoffs, and eU is the estimated eligible proportion of unknowns |
| 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 refusals and breakoffs, I is complete interviews, P is partial interviews, and eU is the estimated eligible proportion of unknowns |
Countries
Bangladesh
Outcome results
None listed