[R] Help with a cumullative Hazrd Ratio plot

Bernardo Rangel Tura tura at centroin.com.br
Wed May 13 12:19:35 CEST 2009

Hi R-masters

I need help to make modified cumulative hazard ratio plot.

I need create a common plot but with the number of subjects in risk each
ticks times for two different groups in bottom of plot (I put one
example in attach).

Do you know a routine for this?
Is possible create a routine for this? 
In this case with how commands?

Thanks in advance!
Bernardo Rangel Tura, M.D,MPH,Ph.D
National Institute of Cardiology

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