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QUESTION
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without cancer were selected and questioned on previous alcohol use.
Breast Cancer (+)
Breast Cancer (-)
Total
Heavy alcohol use
40
20
60
No/low alcohol use
160
180
340
total
200
200
400
- Calculate and interpret the appropriate measure of association for this study?
- You later learn that 15 of the controls [Breast CANCER (-)] did not remember their previous heavy alcohol use and incorrectly reported that they were low alcohol users. By comparison all the breast cancer (+) cases correctly remembered their alcohol use. Please compare appropriate measure of association. (HINT: create a new 2x2 table below)
- Was there evidence of Bias in this study? If so what type of Bias?
