Select the correct reponses Mark the correct answer for each of the following re

Question

Select the correct reponses

Mark the correct answer for each of the following regarding measures of association between exposure and disease:
a. A hazard ratio would be ideal to use for an observational cohort study in which subjects are followed for varying periods of time.
b. A hazard ratio uses cumulative incidence in the exposed and unexposed groups for calculation.
c. Odds ratios are typically used for cross-sectional and case-control studies.
d. A hazard ratio of 4.0, indicating a strong relationship between the exposure and the disease, cannot be the result of bias or confounding.

Explanation / Answer

Ans:

Correct responses are:

Odds ratios are typically used for cross-sectional and case-control studies.

A hazard ratio of 4.0, indicating a strong relationship between the exposure and the disease, cannot be the result of bias or confounding.

The hazard ratio is a comparison between the probability of events in a treatment group, compared to the probability of events in a control group. It's used to see if patients receiving a treatment progress faster (or slower) than those not receiving treatment.

The hazard ratio has also been defined as the ratio of [risk of outcome in one group]/[risk of outcome in another group], occurring at a given interval of time .

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