Consider the Following Results from a Prospective Cohort Study,in Which

question 76

Multiple Choice

Consider the following results from a prospective cohort study,in which the dietary intake of 50,000 people were recorded and the health status,including the occurrence of disease,was monitored for 10 years. $$\begin{array} { | l | l | } \hline \text { Quintiles } & \text { RR for disease } \\\hline 1 - \text { lowest nutrient intake } & 1 \\\hline 2 & 0.80 \\\hline 3 & 0.72 \\\hline 4 & 0.66 \\\hline 5 \text { - highest nutrient intake } & 0.55 \\\hline\end{array}$$ Which statement best describes these results?

• A)These results are from an intervention trial and illustrate an inverse relationship between nutrient intake and disease risk
• B)These results are from an observational study and suggest that there is a direct relationship between nutrient intake and disease risk.
• C)These results are from an observational study and suggest that increasing nutrient intake may be associated with reduced risk of disease
• D)These results are from an observational study and demonstrate causation between nutrient intake and reduced disease risk.

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