Which statement differentiates relative risk from odds ratio?

Which statement differentiates relative risk from odds ratio?

• A. Relative risk compares mortality and odds ratio compares incidence
• B. Relative risk is used in case-control studies; odds ratio in cohort
• C. Relative risk equals odds ratio in all studies
• D. Relative risk compares incidence in exposed vs unexposed; odds ratio compares the odds of exposure among cases vs controls

Answer: (D)