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1 vote
1 answer
315 views

In SAS what is the difference of including treatment variable in model and using the strata statement for treatment variable?

Im building a Cox Regression in SAS. My code looks like this: ...
Jam.Wil's user avatar
  • 77
2 votes
2 answers
3k views

Continuous vs Categorical covariate of interest in Cox Regression

I will use aliases throughout to explain my results in brief and a few questions that have propped up in the process. Suppose I'm interested in the association of baseline measurement of blood ...
mindhabits's user avatar
4 votes
1 answer
206 views

Psychometrics: Survival analysis of help seeking behaviors [closed]

Background: I'm studying people seeking help. Participants described contacts with between 1 and 3 "responders" (e.g., friends, the police) in order- for example, a participant could have contacted ...
Emily's user avatar
  • 658
1 vote
1 answer
2k views

Backward selection in a Cox regression model

My goal is to fit a cox regression model in SAS, for which I use the PROC PHREG statement. As I am still new to regression methods, I would appreciate a little of ...
karla's user avatar
  • 11