Question

Use this information to create a 2x2 contingency table. Fill in the blanks. We are testing the effectiveness of a new physical exam to diagnose breast cancer. A physical examination was used to screen for breast cancer in 3685 women with biopsy-proven breast cancer and in 9500 age-and race-matched control women. The results of the physical examination (the actual screening tool) showed that 1730 of the women with biopsy-proven cancer tested positive for breast cancer and 950 of the controls tested negative. Breast Cancer + Breast Cancer Total Screening tool test Screening tool test - Total

Answer 1

Breast Cancer Breast Cancer Total + Screening 1730 8550 10280 I tool test T 1955 Screening - tool test 950 2905 Total 9500 3685