Table 7 Distribution of UMLS semantic groups assigned to exposures
From: Mining characteristics of epidemiological studies from Medline: a case study in obesity
Semantic group | Frequency | % |
|---|---|---|
Disorders | 8,700 | 36.9 |
Concepts/ideas | 4,635 | 19.7 |
Physiology | 3,969 | 16.8 |
Procedures | 1,611 | 6.8 |
Activities/behaviors | 1,285 | 5.4 |
Living beings | 1,030 | 4.3 |
Chemicals/drugs | 857 | 3.6 |
Objects | 368 | 1.5 |
Genes/molecular | 344 | 1.4 |
Anatomy | 252 | 1.0 |
Phenomena | 180 | 0.7 |
Geographic areas | 145 | 0.6 |
Occupations | 73 | 0.3 |
Devices | 30 | 0.01 |
Organizations | 21 | 0.0 |
Other | 16 | 0.0 |