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Unified Medical Language System® (UMLS®)

2012AB National Drug File Source Information

Counts

 (skip to: notes)

Semantic Type Count Percentage
CLINICAL DRUG 11955 42.8
MEDICAL DEVICE 7313 26.2
PHARMACOLOGIC SUBSTANCE 6529 23.4
ORGANIC CHEMICAL 4463 16
AMINO ACID, PEPTIDE, OR PROTEIN 620 2.2
INDICATOR, REAGENT, OR DIAGNOSTIC AID 526 1.9
FOOD 521 1.9
IMMUNOLOGIC FACTOR 470 1.7
DRUG DELIVERY DEVICE 330 1.2
ANTIBIOTIC 296 1.1
MANUFACTURED OBJECT 293 1
INORGANIC CHEMICAL 284 1
BIOMEDICAL OR DENTAL MATERIAL 279 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