Question

QUESTION 17 In pilot study, 50 women with endometrial cancer (cancer of the uterus) were contacted and asked whether they had ever used estrogen. Each woman with cancer was matched by age, race, and weight to a woman without the disease. This is an example of: O prospective cohort study O ecological study O case-control study o cross-sectional study RCT study QUESTION 18 The health records of the incoming freshman class of 1999 at the University of Connecticut were examined in 2018 to see if their recorded height and weight at the time of admission to the university was associated with stomach cancer by 2018. This is an example of: O prospective cohort study O ecological study O case-control study o cross-sectional study retrospective cohort study

Answer 1

17)case control study

A case–control study (also known as case–referent study) is a type of observational studyin which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute.

18)cross sectional study

a cross-sectional study might be used to determine if exposure to specific risk factors might correlate with particular outcomes. A researcher might collect cross-sectional data on past smoking habits and current diagnoses of lung cancer
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