st: add total group in -sts graph, by()-

[Hau Chyi <hauchyi@gmail.com>]

Dear Stata users,

I have a simple question that I can't seem to find an answer in [ST] menu.

How do I add a total group on the survival graph when I specify: -sts
graph, by(var1)-

I tried:
-sts graph, by(var1) byopt(total)-,
-sts graph, by(var1, total)-

but obviously neither would not work.

Thanks in advance!
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