From: Mining characteristics of epidemiological studies from Medline: a case study in obesity
Semantic group | Frequency | % |
---|---|---|
Disorders | 21,809 | 54.0 |
Concepts/ideas | 7,277 | 18.0 |
Physiology | 3,810 | 9.4 |
Procedures | 1,697 | 4.2 |
Living beings | 1,616 | 4.0 |
Activities/behaviors | 1,413 | 3.5 |
Chemicals/drugs | 990 | 2.4 |
Anatomy | 577 | 1.4 |
Objects | 314 | 0.7 |
Genes/molecular | 265 | 0.6 |
Phenomena | 250 | 0.6 |
Geographic areas | 137 | 0.3 |
Occupations | 102 | 0.2 |
Organizations | 36 | 0.0 |
Devices | 28 | 0.0 |
Other | 16 | 0.0 |