Multiple Choice
To determine the prevalence of smoking among new students in a university,researchers conduct an anonymous survey at the first day of classes.They find that 22% of women and 28% of men were smokers.What type of study design was used?
A) Ecologic
B) Cross-sectional
C) Cohort
D) Case-control
E) Systematic review
Correct Answer:

Verified
Correct Answer:
Verified
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