2 added 56 characters in body edited Mar 3 '18 at 16:43 Aksakal 40.8k44 gold badges5454 silver badges125125 bronze badges It's time to survive from time $$t=0$$. You can calculate the different quantities, such as rate of death (hazard) at time t, or cumulative probability to survive from time $$t=0$$ to time t, from time $$t=s$$ to $$t$$ etc. It's time to survive. You can calculate the different quantities, such as rate of death (hazard) at time t, or cumulative probability to survive to time t etc. It's time to survive from time $$t=0$$. You can calculate the different quantities, such as rate of death (hazard) at time t, or cumulative probability to survive from time $$t=0$$ to time t, from time $$t=s$$ to $$t$$ etc. 1 answered Mar 2 '18 at 19:26 Aksakal 40.8k44 gold badges5454 silver badges125125 bronze badges It's time to survive. You can calculate the different quantities, such as rate of death (hazard) at time t, or cumulative probability to survive to time t etc.