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Unified Medical Language System® (UMLS®)

2012AB Multum Source Information

Counts

 (skip to: notes)

Semantic Type Count Percentage
CLINICAL DRUG 26041 45.1
PHARMACOLOGIC SUBSTANCE 21246 36.8
ORGANIC CHEMICAL 14985 26
MEDICAL DEVICE 6505 11.3
VITAMIN 1468 2.5
FOOD 1084 1.9
INORGANIC CHEMICAL 1074 1.9
AMINO ACID, PEPTIDE, OR PROTEIN 1022 1.8
STEROID 919 1.6
DRUG DELIVERY DEVICE 850 1.5
ANTIBIOTIC 707 1.2
HORMONE 680 1.2

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