The following table shows data from an epidemiological study.What type of study was this most likely to be?
A)Case‐control
B)Cohort
C)Randomised controlled trial (RC
D)Cross‐sectional
E)Descriptive

Question

The following table shows data from an epidemiological study.What type of study was this most likely to be?  
A)Case‐control 
B)Cohort 
C)Randomised controlled trial (RC
D)Cross‐sectional 
E)Descriptive

Quizplus · Accepted Answer

As the results are presented in terms of the number of episodes of disease
in relation to the number of person‐years at risk of disease, this is most likely to have
been a cohort study.While RCTs are also prospective, person‐years are rarely used in
describing denominators.

The Following Table Shows Data from an Epidemiological Study