Survival Analysis estat phtest with very large sample size--need help
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I need a bit of help.
I am doing a survival analysis on a large population ~435732 people. I have been testing the PH assumption using estat phtest and schoenfled residuals. I believe that the large sample size is causing the phtest indicate evidence against the PH assumption while the schoenfeld plot would indicate that the model variables adheres to the PH assumption. I have included the global and individual variable tests, as well as the plot for one of our variables (mets). Could you let me know the cause of this and could you let me know if there are alternative methods or references in literature acknowledging the phtest and alternative methods for very large study populations.