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Nov 16, 2016 1:09 PM
(873 views)

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Nov 23, 2016 7:23 AM
(787 views)

Yes, you can do this in JMP:

- Select Analyze > Reliability and Survival > Fit Proportional Hazards.
- Populate the Time to Event and Censor boxes with the appropriate columns.
- Add your model effects to the lower box, including any interactions or polynomials.
- Select the model effect(s) to which you want to fit a restricted cubic spline (in your case, age). Click the red triangle next to "Attributes," and select Knotted Spline Effect (aka restricted cubic spline, Stone-Koo spline, etc.). Type in the number of knots you desire, and click OK.
- Click Run in the Model Specification dialog box.
- Click the red triangle next to Proportional Hazards Fit, and select Risk Ratios.

You can then construct a data table using the parameter estimates, risk ratios, etc. you obtained, and use that data to create graphs using JMP's Graph Builder that are similar to those you showed.

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Nov 23, 2016 11:30 AM
(776 views)

Thanks a lot. I got the following output from proportional hazards with 4 knots:

How do I put this in the graph builder? Thanks!