Hi
I want to browse or tabulate those patients who fullfill two criteriea from an variable in my dataset.
ID attendance
1 1
1 1
1 2
2 3
2 3
2 3
3 1
3 1
3 2
How can I write an syntax that can find those with both 1 & 2 in my attendance variable?
ID var is string and attendance is num
Thank u..
Kind regards Frank
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