The high school nurse reviewed past records of female students in the school to determine the rate of teenage pregnancy. What is this an example of?
1. A retrospective study
2. A controlled study
3. A prospective study
4. An experimental study
Correct Answer: 1
A retrospective study starts with an event and then reviews past records to determine the possible causes or past rates of occurrence. A controlled study is not covered in the text. A prospective study starts with an event and then moves forward in time to look at outcomes such as follow-up studies. An experimental study is often conducted to determine the effectiveness of a particular therapeutic modality.
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