Which statement is true when discussing RR for a negative outcome?

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Multiple Choice

Which statement is true when discussing RR for a negative outcome?

Explanation:
Relatives risk compares how often the negative outcome occurs in the exposed group versus the unexposed. If the exposure lowers the chance of the adverse event, the risk in the exposed group is smaller, so the ratio is less than 1—indicating a protective effect. If the ratio were greater than 1, the exposure would be associated with a higher risk of the negative outcome; if it equals 1, there’s no difference between groups. RR can be calculated for any dichotomous outcome, including negative ones, so it isn’t meaningless. Therefore, the statement that RR less than 1 indicates decreased risk in the exposed group is the correct interpretation.

Relatives risk compares how often the negative outcome occurs in the exposed group versus the unexposed. If the exposure lowers the chance of the adverse event, the risk in the exposed group is smaller, so the ratio is less than 1—indicating a protective effect. If the ratio were greater than 1, the exposure would be associated with a higher risk of the negative outcome; if it equals 1, there’s no difference between groups. RR can be calculated for any dichotomous outcome, including negative ones, so it isn’t meaningless. Therefore, the statement that RR less than 1 indicates decreased risk in the exposed group is the correct interpretation.

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