In a matched case-control study or estrogen use and endometrial cancer: Controls Estrogen use + Estrogen use - Cases Estrogen use + 17 76 Estrogen use - 10 111 A.3. Based on these data, what is the crude risk for endometrial cancer and estrogen use, its variance and the 95% Cl around it? (2 pts) Where the 95% CI for an OR =exp(InOR + 1.96*sqrt(var)) So the lower limit = exp(InQR - 1.96*sqrt(var)) And the upper limit = exp(InOR + 1.96*sqrt(var))