Hi all,
My Cox regression model doesn't validate the proportional hazards hypothesis. I think the other two assumptions are easy to verify.
I used the 'strata' function in my model [ strata(hospital) ], but the proportional hazards assumption is still not validated.
How can I do to validate this assumption.
Because if this assumtion is not verified, the model is not correct no ?
Thanks for help.
My Cox regression model doesn't validate the proportional hazards hypothesis. I think the other two assumptions are easy to verify.
I used the 'strata' function in my model [ strata(hospital) ], but the proportional hazards assumption is still not validated.
How can I do to validate this assumption.
Because if this assumtion is not verified, the model is not correct no ?
Thanks for help.