Displaying 1 result from an estimated 1 matches for "pluralgp".
2004 Oct 16
3
Cox PH Warning Message
Hi,
Can anybody tell me what the message below means and how to overcome it.
Thanks,
Neil
Warning message:
X matrix deemed to be singular; variable 2 in: coxph(Surv(age_at_death,
death) ~ project$pluralgp + project$yrborn + .........
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