Taking the mean of values from long form data

[EpiNovice]

Good morning, I need help with code to create a variable that is the mean of a series of values from a long data set. For example, the data I have looks like this:

ID	Event	Time (ms)
1	A	1.2
1	B	3.3
1	A	1.1
1	B	2.3
1	A	0.9
1	B	1.9
1	A	1.4
2	A	2.3
2	B	3.2
2	A	1.9
2	B	2.8
2	A	1.7
2	B	3.1

And what I need is data that looks like this:

ID	Event	Mean time (ms)
1	A	1.14
1	B	2.43
2	A	1.95
2	B	3.03

Do I need to reformat to wide dataset to accomplish this, or is there another way?

Thanks in advance!

[sbxkoenk · Accepted solution]

PROC MEANS DATA=HAVE MEAN NWAY;
 CLASS ID EVENT;
 VAR TIME;
 output out=work.ContainsMean mean= / autoname;
RUN;

Koen