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Table 12 Systematic naming metric values for each SNOMED CT hierarchy, including the number of LR classes in the hierarchy, and the counts of both positive and negative cases, sorted by the metric value

From: Analysis of readability and structural accuracy in SNOMED CT

Hierarchy

LR classes

Positive cases

Negative cases

Metric value

Record artifact

1

3

0

1.00

Event

1

75

2

0.97

Pharmaceutical/biologic product

2

730

22

0.97

SNOMED CT model component

43

217

88

0.71

Organism

2

1735

1042

0.62

Specimen

1

1024

676

0.60

Qualifier value

177

870

719

0.55

Environment or geographical location

4

143

133

0.52

Physical force

1

32

38

0.46

Observable entity

7

1443

1939

0.43

Substance

39

8496

39131

0.18

Procedure

22

15463

79584

0.16

Clinical finding

32

16556

90841

0.15

Body structure

34

1680

13527

0.11

Physical object

5

1452

13981

0.09

Social context

5

25

296

0.08

Special concept

1

0

0

 

Staging and scales

1

0

0