Multiple Choice
A five-year prospective cohort study to assess the association between supplemental vitamin A exposure and mortality and morbidity for measles has just been completed. The RR for incidence of measles was 0.75, and the RR for measles mortality was 0.5. Regarding the RR, which statement is correct?
A) Exposure to vitamin A appears to protect against morbidity and mortality for measles.
B) Exposure to vitamin A appears to be a risk factor for morbidity and mortality for measles.
C) Exposure to vitamin A is not associated with morbidity and mortality for measles.
D) Exposure to vitamin A is a risk factor for morbidity and a protective factor for mortality for measles.
Correct Answer:
Verified
Correct Answer:
Verified
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