A cross sectional survey design compared to cohort design differs in that cross sectional surveys collect data
A) more frequently than in a cohort design.
B) once compared to multiple times in a cohort.
C) from different groups compared to same group in a cohort.
D) twice as compared to once in a cohort.

Question

A cross sectional survey design compared to cohort design differs in that cross sectional surveys collect data 
A) more frequently than in a cohort design.
B) once compared to multiple times in a cohort.
C) from different groups compared to same group in a cohort.
D) twice as compared to once in a cohort.

Quizplus · Accepted Answer

Cross sectional surveys collect data once, at a single point in time, while cohort designs collect data multiple times over a period of time from the same group. Therefore, choice B is the best answer. Choices A, C, and D are incorrect as they do not accurately describe the difference between cross sectional surveys and cohort designs.

A Cross Sectional Survey Design Compared to Cohort Design Differs