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Unified Medical Language System® (UMLS®)

2012AB NCI Thesaurus Source Information

Counts

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Semantic Type Count Percentage
PHARMACOLOGIC SUBSTANCE 19634 20.6
ORGANIC CHEMICAL 13930 14.6
FINDING 10019 10.5
NEOPLASTIC PROCESS 9329 9.8
GENE OR GENOME 6214 6.5
AMINO ACID, PEPTIDE, OR PROTEIN 6063 6.3
THERAPEUTIC OR PREVENTIVE PROCEDURE 4658 4.9
DISEASE OR SYNDROME 3721 3.9
IMMUNOLOGIC FACTOR 2254 2.4
BODY PART, ORGAN, OR ORGAN COMPONENT 2259 2.4
QUANTITATIVE CONCEPT 2243 2.3
INTELLECTUAL PRODUCT 2236 2.3
BIOLOGICALLY ACTIVE SUBSTANCE 1869 2
CELL 1476 1.5
SPATIAL CONCEPT 1436 1.5
LABORATORY PROCEDURE 1349 1.4
FUNCTIONAL CONCEPT 1256 1.3
ANTIBIOTIC 1181 1.2
CELL OR MOLECULAR DYSFUNCTION 1175 1.2
STEROID 1158 1.2
NUCLEOTIDE SEQUENCE 1054 1.1
QUALITATIVE CONCEPT 1042 1.1
POPULATION GROUP 1023 1.1
BACTERIUM 995 1
ENZYME 957 1

Notes

  • Semantic Types are a set of broad subject areas that provide a consistent categorization of concepts represented in the Metathesaurus. Semantic Types are arranged into two mutually exclusive hierarchies, Entity and Event.
  • Semantic Types help summarize the content of a source.
  • Each Metathesaurus concept is assigned at least one semantic type, many have more than one.
  • The report displays the most frequently assigned semantic types in descending order, up to a total of 1%.
  • The 'Count' field below is the number of concepts assigned a specific semantic type and containing at least one atom from the source.
  • The 'Percentage' field below is the count relative to the total number of concepts that contain an atom from that source.
  • The MRSTY file contains one row for each Semantic Type assigned to each concept. All Metathesaurus concepts have at least one entry in this file.
  • See Chapter 5 of the UMLS Reference Manual to read more about the Semantic Network