CPH Practice Questions - Certified In Public Health (CPH) Exam

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A public health researcher calculates an odds ratio of 3.2 (95% CI: 1.8–5.7) for the association between smoking and lung cancer in a case-control study. What does this result indicate?

Smokers are 3.2 times less likely to develop lung cancer than non-smokers The odds of lung cancer are 3.2 times higher among smokers compared to non-smokers, and the association is statistically significant Smoking causes lung cancer with 95% certainty 32% of lung cancer cases are caused by smoking

Correct Answer:

The odds of lung cancer are 3.2 times higher among smokers compared to non-smokers, and the association is statistically significant

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