I've done this many times (in the past) to identify duplicate records;
I've typed and retyped this several times. What's going wrong?
. bys faccode pat_mrn admit_datetime discharge_datetime: gen dups=_N
. tab dups
variable dups not found
r(111);
Notice, the first line does NOT produce an error. However, it also
does not produce a new variable!
Thanks in advance for pointing out what must be an obvious error.
Jeph
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