You can graph this by using Generalized Regression in JMP Pro.
One of the methods introduced by Heinzl and Kaider (1997) is explained in the document (the document can be downloaded from "Attachments" on the right) .
- Heinzl, H. and Kaider, A. (1997), Gaining More Flexibility in Cox Proportional Hazards Regression Models with Cubic Spline Functions, Computer Methods and Programs in Biomedicine, 54, 201-208.
This post originally written in Japanese and has been translated for your convenience. When you reply, it will also be translated back to Japanese.