d. 1.61 38. Recall, the data from the randomized clinical trial of patients with primary biliary cirrhosis (PBC). The Cox PH model that estimares the association between mortality and sex (88% F, 12% M in this patient sample) is : In(hazard of mortaility at time t: x)- In(). (t)) + -0.4811, where x1 =1 for females and O for males. The standard error of the slope for x1 ( SE(B, ) ) is 0.23. -What is the 95% CI for the hazard ratio from question 37? a. (-0.94, -0.02) b. (0.39, 0.98) c. (0.02, 0.94) d. (1.02, 1.56) 39