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)) + -0.48:1, where x, =1 for females and O for males. The standard error of the slope for x, ( SE(B, ) ) is 0.23. - What is the estimated hazard ratio of death for females relative to males based on this model? a. -0.48 b. 0.48 c. 0.62 4 d. 1.61 Type here to search O 82 F Z ThinkVision O- 1