


You could then compare the survival distributions (experiences) between the four doses to determine if they are equal. Furthermore, the survival distributions of two or more groups of a between-subjects factor can be compared for equality.įor example, in a study on the effect of drug dose on cancer survival in rats, you could use the Kaplan-Meier method to understand the survival distribution (based on time until death) for rats receiving one of four different drug doses: "40 mg/m 2/d", "80 mg/m 2/d", "120 mg/m 2/d" and "160 mg/m 2/d" (i.e., the survival time variable would be "time to death" and the between-subjects factor would be "drug dose"). The Kaplan-Meier method (Kaplan & Meier, 1958), also known as the "product-limit method", is a nonparametric method used to estimate the probability of survival past given time points (i.e., it calculates a survival distribution).

Kaplan-Meier using SPSS Statistics Introduction
