Table 1.

Number of fields and descriptions with examples from the i2b2 2009 dataset

Fields	#	Example	Description
Medication	12773	“Lasix,” “Caltrate plus D,” “fluocinonide 0.5% cream,” “TYLENOL (ACETAMINOPHEN)”	Prescription substances, biological substances, over-the-counter drugs, excluding diet, allergy, lab/test, alcohol.
Dosage	4791	“1 TAB,” “One tablet,” “0.4 mg,” “0.5 m.g.,” “100 MG,” “100 mg x 2 tablets”	The amount of a single medication used in each administration.
Mode	3552	“Orally,” “Intravenous,” “Topical,” “Sublingual”	Describes the method for administering the medication.
Frequency	4342	“Prn,” “As needed,” “Three times a day as needed,” “As needed three times a day,” “x3 before meal,” “x3 a day after meal as needed”	Terms, phrases, or abbreviations that describe how often each dose of the medication should be taken.
Duration	597	“x10 days,” “10-day course,” “For ten days,” “For a month,” “During spring break,” “Until the symptom disappears,” “As long as needed”	Expressions that indicate for how long the medication is to be administered.
Reason	1534	“Dizziness,” “Dizzy,” “Fever,” “Diabetes,” “frequent PVCs,” “rare angina”	The medical reason for which the medication is stated to be given.