Hello, I have done RCT random assigned to treatment A and B and follow at 1 and 2 months. I want to analyze whether there is difference between treatment A and B to affect (month1-baseline) and (month2-baseline).

Group baseline month1 month2
A 2 4 8
A 6 5 10
A 9 15 20
B 3 5 7
B 6 8 10

I can't figure how to analyze these by Stata
Thank you