Anonymous questionnaires were administered to all New York City 9th graders. The students were queried on their smoking habits, grade point average, sex (M/F), parental occupation, and grouped by homeroom teacher. The investigations hypothesized that students may be more or less likely to start smoking based on their educational level, gender, and family socio-economic status. What type of study is this?

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The described study is an example of a crosssectional observational study with elements of ... View the full answer