Table 6.

Example outputs of the additional true positives found in the clinical NER system that uses distributional semantic features over the one that does not.

Annotation	Sentence	Quasi-thesaurus
Concept = mesna; type = treatment	She also received Cisplatin 35 per meter squared on 06/19 and Ifex and Mesna on 06/18	Mesna Etoposide DTIC Cisplatinum Cisplatin CDDP 5-fu Hydroxyurea Gemcitabine Ceftriaxone Mitoxantrone VP-16 Ifo Irinotecan Ifosfamide Carboplatin Idarubicin Epirubicin Dexamethasone Prednisolone
Concept = mild bradycardia; type = problem	May start beta-blocker at a low dose given mild bradycardia at atenolol 50 mg p.o. q day	Bradycardia Hypotension Dysphagia Hemorrhages Edema Bleeding Dyspnea Agitation Hypoxemia Fever Diarrhea Hyponatremia Nephrotoxicity Atelectasis Sedation Cough Pruritus Neurologic Proteinuria Ar
Concept = 2 liters nasal cannula oxygen; type = treatment	She needs home oxygen and is currently at 2 liters nasal cannula oxygen	Cannula Syringe Prosthesis Plate Flap Electrode Stimulus Reservoir Filter Bar Catheter Sensor Probe Tube Preparation Endoscope Device Port Apparatus Dressing

Notes: These examples are from the annotated corpus that belongs to Partners Healthcare. We were allowed to share them publicly after removing the protected health information.