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https://issues.apache.org/jira/browse/CTAKES-289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13943225#comment-13943225
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James Joseph Masanz commented on CTAKES-289:
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A later email from Jain in the thread also reports
"I also wanted to mention that I have noticed the same behavior when ranges are
specified in the context of dosage and frequency. For example, when I try:
'Take Lipitor 1-2 tabs 3-4 times a day for 7 days', dosage is annotated as '2'
and frequency value is annotated as '4'.
Looks like the same pattern is surfacing here (use the latter half) as well."
> cTAKES handling of fractions in dosage
> --------------------------------------
>
> Key: CTAKES-289
> URL: https://issues.apache.org/jira/browse/CTAKES-289
> Project: cTAKES
> Issue Type: Bug
> Components: ctakes-drug-ner
> Affects Versions: 3.1.1
> Reporter: Pei Chen
> Priority: Minor
>
> Hi,
> I am running the DrugAggregatePlainTextUMLSProcessor and noticing that cTAKES
> is not handling fractions for medication dosage correctly. For example,
> "Benadryl 1/2 tsp 3 times daily"
> produces a MedicationMention with a dosage of 2. Having tried different
> fractions (1/2, 1/3, 2/4, etc.), apparently the dosage is always set to the
> digit on the right of the '/'. I am wondering if this is a documented issue
> with cTAKES (I am using cTAKES version 3.1). Thanks in advance.
> Jain
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