Survival analysis and censoring for death

[Ushma Agarwal]

Hi,
I am doing survival analysis on transplant patients with graft failure and I need to censor for death.
How do I do that in STATA.
Please help me out!
Thanks

[Leonardo Guizzetti]

I suggest reading the PDF documentation from -help stset- which demonstrates how survival data is declared in Stata.

[Maxence Morlet]

Hi Ushma Agarwal: your request is extremely vague, it really depends.

To start with, have you tested the proportional hazards assumption?

You should also consider a competing risks regression.

But unfortunately unless you give us more information we cannot help you beyond that.

[Ushma Agarwal]

Hi,
I have graft failure data for 5 year follow-up period and have data on subjects who died within that time period. I have done survival analysis before but have never censored for death so I wanted to know how to write code for that.

[Maxence Morlet]

Is the censoring process informative? It seems like it is not.

Aside from death, which is your event of interest, are there any other events susceptible of taking place which may preclude death from happening or fundamentally alter its probability?

If so, run a competing risks regression as in Thomas (1996).

If not, you really need to test the proportional hazard hypothesis before going forward. You can do so with Schoenfeld residuals for instance, take a look here: https://www.statalist.org/forums/for...feld-residuals.

[Ushma Agarwal]

My event of interest is graftfailure and I dont want to include patients who died before the five year survival period