Scenario 1	Censoring times are independent of Z:
	Generate censoring times from an exponential distribution ~ exp(λC)
	Set λC = 0.556 for 30% censoring, λC = 1.342 for 50% censoring
Scenario 2	Censoring times depend on Z by a Cox model:
	Generate censoring times from a Cox model, λC(t|Z) = λC exp(βCZ)
	Set βC = 2.5 and λC = 0.137 for 30% censoring
	Set βC = 2.5 and λC = 0.391 for 50% censoring
Scenario 3	Censoring times depend on Z, not by a Cox model:
	C ~ U(0.25, 4.00), if Z = 0, C ~ U(0.07, 1.12), if Z = 1 for 30% censoring
	C ~ U(0.25, 2.00), if Z = 0, C ~ U(0.06, 0.46), if Z = 1 for 50% censoring