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Table 18 Examples of successful normalisations determined by HYPHEN in PHAEDRA

From: Annotation and detection of drug effects in text for pharmacovigilance

Original Term

Category

Transformations

Concept ID assigned

Technique

Variant generated

supratherapeutic INRs

Disorder

(1) Acronym disambiguation

supratherapeutic international normalized ratios

UMLS: C0853225

(2) Plural to singular

supratherapeutic international normalized ratio

cutaneous pigmentation

Disorder

Neoclassical-English

skin pigmentation

UMLS: C1269684

liver toxicity

Disorder

English-Neoclassical

hepatic toxicity

UMLS: C0348754

abnormalities in liver function tests

Disorder

Syntactic variant generation

abnormal liver function tests

UMLS: C0151766

immunosuppression

Pharmacological substance

Syntactic variant generation

immunosuppressant

MeSH: D007166

antihistaminics

Pharmacological substance

Synonym generation

antihistamines

MeSH: D006633

convulsive seizures

Disorder

(1) Plural to singular

convulsive seizure

UMLS: C0036572

(2) Syntactic variant generation

convulsion seizure

(3) Synonym generation

fit-convulsion