[Morris Muzyamba]

Is the merge command in Stata case sensitive? i.e. can I merge T12345678 with t12345678?

[Andrew Musau]

Yes, it is case sensitive. If you want to merge these two, you need to change the first to lower case

replace var= lower(var)

or for the second

replace var= proper(var)

where "var" is the name of the identifier in the merge.

[Morris Muzyamba]

Thank you Andrew. I will do. The data is coming from two sources and there is no consistency in capitalisation.