In assessing the relative merits of case-control and cohort studies, which one of the following statements is correct? Case-control studies take longer to complete, A cohort design... In assessing the relative merits of case-control and cohort studies, which one of the following statements is correct? Case-control studies take longer to complete, A cohort design is more suited to the study of rare diseases, Case-control studies are more costly, Unlike case-control studies, cohort studies permit the direct calculation of incidence rates.
Understand the Problem
The question is asking to evaluate the comparative advantages and characteristics of case-control studies versus cohort studies in research. It presents multiple statements regarding these study types and asks which one is correct.
Answer
Unlike case-control studies, cohort studies permit the direct calculation of incidence rates.
Unlike case-control studies, cohort studies permit the direct calculation of incidence rates.
Answer for screen readers
Unlike case-control studies, cohort studies permit the direct calculation of incidence rates.
More Information
Cohort studies follow subjects over time from exposure to outcome, allowing for the calculation of incidence rates, while case-control studies start with outcomes and look backward to exposures.
Tips
Students often confuse the capabilities of case-control and cohort studies. Remember, cohort studies can measure how often new cases occur (incidence), providing a clearer temporal sequence.
Sources
- Observational Studies: Cohort and Case-Control Studies - PMC - NCBI - ncbi.nlm.nih.gov
- Case-Control Study - an overview | ScienceDirect Topics - sciencedirect.com
- Designing and Conducting Analytic Studies in the Field - CDC - cdc.gov
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