st: K-M curves with symbols

[Fabrizio Stracci <fabs@unipg.it>]

Dear listers,

Is there a simple way to draw Kaplan-Meier survival curves with markers 
(different for each value of a group variable)? Many thanks for your time.

Best regards
Fabrizio Stracci

===================================================================
Fabrizio Stracci
Dept. Hygiene and Public Health, University of Perugia
Umbrian Population Cancer Registry
Via del Giochetto
06100 Perugia, Italy
Tel. (+39) 075 585 7366
Fax (+39) 075 585 7317
e-mail fabs@unipg.it
==================================================================== 

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