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Table 1 Source of the 70 non-unique synonyms found for the term hypertension (DOID:10763) per-ontology

From: Improved characterisation of clinical text through ontology-based vocabulary expansion

Ontology

Source

Number of Synonyms

GWAS_EFO_SKOS

Lexical

16

MESH

Lexical

4

HTN [26]

Lexical, Equivalency

3 (2)

CRISP

Lexical

1

CCTOO [33]

Lexical

6

ONTONEO

Lexical, Equivalency

4 (3)

NCIT [34]

Lexical

6

COSTART

Lexical

7

BAO

Lexical, Equivalency

2

CSSO

Lexical

2

ODAE

Lexical, Equivalency

2

DO

–

3

DTO

Equivalency

2

Total

–

70

Total Unique

–

28

  1. Of these synonyms, 28 were unique. The source column describes which class matching methods were used to match classes that contributed synonyms from the external ontology. Lexical refers to when classes were found through a matching first label, and equivalency through a semantic equivalency query. Bracketed numbers, where given, are the labels found by the equivalency method only