mi with imputations already exist in format long

[MisheAal Levi]

Hello!
I have got a file with 5 options of imputations for each variable. I mean that every participant has five rows, each of which fills with different imputation for the same varibale.
something like this:

ID imputation_number variabl1 variable 2
1 1 8 1.2
1 2 7.8 1.2
1 3 8 1.1
1 4 7.7 1
1 5 8 1
2 1 3 2
2 2 3.4 2
2 3 3.3 2.1
2 4 2.9 2.2
2 5 3.1 2



Can I use mi in STATA to compute the mean of these 5 imputations? how can I do it in a format long? is it capable to deal with a file with imputation already calculated?

I will be happy for any information.
Thanks!

[Rich Goldstein]

see

h mi estimate

and

help mi_estimation##estimation_command

in the latter, scroll down to the "descriptive statistics" header