Question

The difference between the incidence in the exposed and non-exposed group is best given by:

• A. Relative risk
• B. Attributable risk
• C. Population attributable risk
• D. Odds ratio

Answer 1

The Correct Option is B

The correct answer to the question about the difference between the incidence in the exposed and non-exposed group is Attributable risk. Let's break it down:

Explanation:

• Relative risk: Measures the ratio of the risk of a certain event occurring in the exposed group compared to the non-exposed group. It does not measure the difference, but rather the ratio.
• Attributable risk: This measures the absolute difference in incidence between the exposed group and the non-exposed group. It represents the additional incidence of the condition that can be attributed to the exposure.
• Population attributable risk: Reflects the proportion of the incidence in the total population that can be attributed to the exposure. This is different from the direct comparison of the two groups.
• Odds ratio: Often used in case-control studies, it measures the odds of exposure in cases (those with the outcome) compared to controls (those without the outcome). It’s more applicable to the likelihood rather than the incidence difference.

In summary, when we want to determine the difference in incidence, Attributable risk directly provides this metric, making it the best choice in this context.