Dear All, I have a survival data that is time to an event type data, i want to perform cox hazard proportional hazard model on that. my doubt is how to check the basic assumptions about proportanality and linearity of covariates in SAS EG because i have 106 independent variables and around 7 lacs rows. data consist of all type of variables format ie binary, continous, nominal. Also my data consist of censored rows, so i want to know how survival function estimate is calculated i mean the exact formulla. pls help i am doin project on this and tired of googling..
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