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Unified Medical Language System® (UMLS®)

Statistics - 2017AB Release

Official Counts: 
Release version:    2017AB
Release format:    RRF 
Concepts:    3,640,132
Number of concept names (AUIs):    13,897,048
Number of distinct concept names (SUIs):    11,757,373
Number of distinct normalized concept names (LUIs):    10,735,609
Number of sources (distinct source families by language):    153
Number of sources contributing concept names:    201
Number of languages contributing concept names:    25

Name Count by Language:

Language Name Count % of Metathesaurus
ENG 9852386 70.9%
SPA 1397648 10.06%
FRE 419971 3.02%
POR 346118 2.49%
JPN 318938 2.3%
DUT 282436 2.03%
ITA 231631 1.67%
GER 223431 1.61%
RUS 177038 1.27%
CZE 171105 1.23%
HUN 102815 0.74%
CHI 74879 0.54%
NOR 59285 0.43%
TUR 50610 0.36%
POL 48887 0.35%
KOR 38664 0.28%
EST 31054 0.22%
SWE 29275 0.21%
FIN 25489 0.18%
SCR 9865 0.07%
GRE 2215 0.02%
LAV 1405 0.01%
DAN 723 0.01%
BAQ 695 0.01%
HEB 485 0%

 

Name Count by Source Restriction Level (SRL):

SRL Source Count % of Sources
0 6829751 49.15%
1 137306 0.99%
2 22156 0.16%
3 3973880 28.6%
4 181738 1.31%
9 2752217 19.8%
0+4 7011489 50.45%

 

Count of Atoms by Suppressibility:

Suppressibility Status Name Count % of Metathesaurus
Y 668565 4.81%
N 11879372 85.48%
O 1342622 9.66%
E 6489 0.05%

 

Source Counts by Language (from MRSAB):

Language Name count % of Metathesaurus
ENG 131 65.17%
FRE 9 4.48%
GER 9 4.48%
SPA 9 4.48%
DUT 7 3.48%
ITA 6 2.99%
POR 5 2.49%
KOR 3 1.49%
JPN 2 1%
* 2 1%
RUS 2 1%
SWE 2 1%
CZE 2 1%
NOR 2 1%
FIN 2 1%
HUN 2 1%
LAV 1 0.5%
GRE 1 0.5%
TUR 1 0.5%
HEB 1 0.5%
DAN 1 0.5%
BAQ 1 0.5%
SCR 1 0.5%
CHI 1 0.5%
POL 1 0.5%
EST 1 0.5%

*Note: 2 sources contribute relationships which have no associated language values.