Hello everyone. I'm new in STATA and I need help for this problem. I have a Variable (Var1) which has 30 Values from A1 --> A30. Now I enter it on STATA like this:
Var 1
A1
A2
A1, A2
A1, A2, A3
I know how to encode A --> 1, A2 --> 2 but I don't know how to make STATA understands that A1, A2 --> 1 + 2 or A1, A2, A3 --> 1 + 2 + 3. Please help me, thank you so much for your help.