1. I haven't seen that particular message before, so it is difficult to comment.
2. To go further, you will need to provide a reproducable example, i.e., some
code/data that I could run to get the same error.
3. One note
cox.NV <- coxph(Surv(recidivism$intDaysUntilFNVPO,
recidivism$Ev
Hello,
I am hoping for some advice regarding warning/error messages I
received when running a Cox regression
# message 1 - obtained while creating a plot of residuals
> plot (NV.zph, main = "groupNUSM - UNFIT", var= 'groupNUSM')
Warning messages:
1: In approx(xx, xtime, seq(min(xx), max(xx),
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