Kaplan Meier by exposure groups

[Alexander Love]

Hi,

I am a bit stuck trying to generate a Kaplan Meier curve. I would like to create 4 different Kaplan Meier graphs, comparing 1 variable across 4 different exposure group

Example:
Survival of males vs females for using drugA, drugB, drugC and drugD
I would like to create one graph for each exposure group/drug, each graph comparing survival according to sex.

Any help is much appreciated

Thanks

[Carlo Lazzaro]

Alexander:
you may want to try:

sts graph, by(drug sex)

[ashar ata]

I think Carlo's code will give you a single graph with 8 curves (lines) on it.
if you would "like to create one graph for each exposure group/drug, each graph comparing survival according to sex"
I am assuming you want to create 4 graphs (one for each drug) comparing survival by sex

 sts graph if drug=="A" , by(sex)
sts graph if drug=="B" , by(sex)
sts graph if drug=="C" , by(sex)
sts graph if drug=="D" , by(sex)

This should give you four graphs provide your variable "drug" is coded as a string variable with values A, B, C and D

Hope this helps.
Ashar

[Steve Samuels]

See post #5 in this threadfor an example of using graph combine to combine multiple graphs into one.