A microcomputer program to compare the survival probability of patient groups.

A program was written to calculate the probability of patient survival, tabulate the results in the form of a life table and compare two patient groups by the Mantel-Haenszel (logrank) test on a microcomputer. The program reads data in either a text form or the format of data files of the dBASE III/III plus (Ashton-Tate). The program is entirely menu-driven and extremely easy to use. The structure of the data files and the function of the program are described. This program is useful to those without easy access to mainframe computers.