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From Kannan Thiagarajan <kanna...@gmail.com>
Subject DrugAggregateUMLSPlainTextProcessor related question
Date Mon, 29 Apr 2013 12:51:39 GMT

I'm trying to understand the named entity recognition aspect of cTAKES.

If I pass-in a text such as below

*Lexapro 10 mg oral tablet 3 times a day*

cTAKES finds a single MedicationEventMention with the RxNorm code = 352741.
 However looking in the RXCONSO database, I see that there is one specific
entry for the 10 mg.

352272|ENG||||||1937400|1937400|352272||RXNORM|SY|352272|Lexapro 10 MG Oral

But, cTAKES always resorts to finding the first entry (without 10 mg).

I did however notice that in certain cases it finds two annotations. For

*Aspirin 325 mg two times a day*

Comes up with two annotations - Asprin 325 mg (code 317300) and Aspirin
(code 1191)

317300|ENG||||||1481682|1481682|317300||RXNORM|SCDC|317300|Aspirin 325

Any thoughts as to why there might be a difference in the lookup.


Best Regards
Kannan Thiagarajan

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