Question: You are conducting a case control study to determine if an association exists between melanoma and indoor tanning. From a statewide cancer registry, you identify

You are conducting a case control study to determine if an association exists between melanoma and indoor tanning. From a statewide cancer registry, you identify 1,107 people who were diagnosed with melanoma in the last three years. You select 1,500 controls for your study. Through a follow-up survey, you find that 696 of those with melanoma had a history of indoor tanning. 48.2 percent of the control group reported no exposure to indoor tanning.

what is the odds ratio?

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