From: Replicating medication trend studies using ad hoc information extraction in a clinical data warehouse
Medications
Occurrences
#
%
Abbreviation
40
33%
76
41%
Not in DB
22
18%
39
21%
Alternative notation
9
7%
10
5%
Misspelling
38
31%
47
25%
Search to fuzzy
3
2%
6
3%
Incorrect extracted medication