EPIDEMIOLOGY QUESTION Investigators conducted a study to compare measles-mumps-rubella (MMR) vaccine history among 1,200 children with...
EPIDEMIOLOGY QUESTION
Investigators conducted a study to compare measles-mumps-rubella (MMR) vaccine history among 1,200 children with developmental disorder and 4,400 children without such disorders. (They found no association.) This is an example of which type of study?
| A. |
Case-control |
|
| B. |
Cohort |
|
| C. |
Cross-Sectional |
|
| D. |
Clinical trial |
Homework Answers
This is an example of case control study as it is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute.
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