Asked by Paula Durley on Aug 01, 2024
Verified
The main difference between a cohort study and a randomized trial is that
A) cohort studies are longitudinal and randomized trials are cross-sectional.
B) only clinical trials can evaluate the effect of a drug.
C) randomized trials are experimental and cohort studies are observational.
D) clinical trials are observational and cohort studies are experimental.
E) at the beginning of a clinical trial, participants are free of disease, and cohort studies start with patients with a disease.
Randomized Trials
Experimental studies where participants are randomly assigned to different treatment groups to evaluate the effects of those treatments.
Cohort Study
A research approach involving a group of people observed over a period to determine how certain exposures affect outcomes.
Experimental
Pertaining to a scientific approach involving controlled trials and studies to test hypotheses, investigate cause-and-effect relationships, or demonstrate specific effects.
- Differentiate between observational and experimental study designs.
Verified Answer
Learning Objectives
- Differentiate between observational and experimental study designs.
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