Testing Response Bias on Sensitive Topics in Self- Versus Enumerator-administered Surveys

Study Overview
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Brief Summary
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Within a survey of adolescent males in Medellin schools (mainly 13-year old boys) the researchers are randomizing whether survey respondents answer sensitive questions themselves or are asked the questions by an enumerator. Questions are of three main varieties: (1) antisocial behaviors, (2) symptoms of depression, and (3) symptoms of anxiety.

Official Title
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Testing Response Bias on Sensitive Topics in Self- Versus Enumerator-administered Surveys

Conditions
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Bias, Implicit

Intervention / Treatment
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* Behavioral: Self-administered survey
* Behavioral: Enumerator-administered survey


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All male students in seventh grade in a sample of public schools are eligible. The sample corresponds to a representative sample of public schools (we aim at 90 schools) Exclusion Criteria: Female students or students not in seventh grade

Ages Eligible for Study
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Minimum Age: 9 Years
Maximum Age: 16 Years

Sexes Eligible for Study
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Male

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: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Treatment<br>Survey respondents will self-administer three survey sections in a tablet: (1) antisocial behaviors, (2) depression symptoms, and (3) anxiety symptoms | Behavioral: Self-administered survey<br>* Subjects will self-administer questionnaire sections on sensitive topics: (1) antisocial behaviors, (2) symptoms of depression, and (3) symptoms of anxiety.<br>|
| Placebo Comparator: Control<br>Survey respondents will have the survey questions on the three sections administered by an enumerator | Behavioral: Enumerator-administered survey<br>* Subjects will have enumerator-administered questionnaire sections on sensitive topics: (1) antisocial behaviors, (2) symptoms of depression, and (3) symptoms of anxiety.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The main outcome is the mean difference in survey responses for an average of the three indexes being measured | Three survey sections are being tested: (1) antisocial behaviors, (2) depression symptoms, and (3) anxiety symptoms. Each section can be summarized by a single index of survey questions in that section--indexes of antisocial behavior, depression and anxiety. To reduce the number of hypotheses tested, the researchers plan to test the difference by treatment status for an average of these three indexes. The researchers also plan to test the mean difference by treatment status for each of the three indexes, and will report regular standard errors as well as standard errors corrected for three comparisons. | Through study completion, an average of 1 year |