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Message-ID: <1303407855.20877.4.camel@nemo> Date: 2011-04-21T17:44:15Z From: Terry Therneau Subject: survexp with weights > lines(survexp( ~ trt, ratetable=pfit.wtd, data=pbc), col='purple') Error in eval(expr, envir, enclos) : object 'albumin' not found The code does work, however, using the latest version of survival. (Use of case weights in survexp languished on my to-do list for a long long time.) Terry Therneau