Survival rate estimation system, survival rate estimation method, and survival rate estimation program

摘要

Problem to be solved: to provide a survival rate estimation system for calculating an insurance premium according to the survival rate of cancer patients.The survival rate estimation system stores an exponential function (ft = J at + k) for estimating the viability of cancer patients (t is the number of years after the start of the cancer treatment, FT is the relative survival rate, bottom a is 0 < a < 1, the asymptotic line k is 0 < K < 1, j is k-1).Next, a relative survival rate of an input year of L years and a year of 2l years is accepted (step SB-2), and the value is substituted into a stored exponential function to solve a binary 2L order equation, thereby obtaining a and K values.Diagram