Table 6.
Top 20 frequently observed semantic types of the identified concepts.
| Rank | Tumblr | Yahoo! Answers | ||||||||
| Blogs | Questions | Answers | ||||||||
| Semantic type | Concepta | Semantic type | Concept | Semantic type | Concept | |||||
| n (%) | Freq. | n (%) | Freq. | n (%) | Freq. | |||||
| 1 | Finding | 380 (15.7) |
5277 | Pharmacologic substance | 1240 (19.2) | 53,976 | Pharmacologic substance | 1995 (19.2) |
185,880 | |
| 2 | Pharmacologic substance | 307 (12.7) | 4413 | Organic chemical | 1006 (15.6) |
41,255 | Organic chemical | 1692 (16.3) |
123,509 | |
| 3 | Therapeutic or preventive procedure | 241 (10.0) |
3184 | Finding | 895 (13.9) |
30,458 | Disease or syndrome | 1511 (14.6) |
57,379 | |
| 4 | Disease or syndrome | 239 (9.9) |
2923 | Disease or syndrome | 743 (11.5) | 28,041 | Finding | 1302 (12.5) |
76,765 | |
| 5 | Organic chemical | 225 (9.3) |
2737 | Body part, organ, or organ component | 484 (7.5) |
27,172 | Body part, organ, or organ component | 666 (6.4) |
48,584 | |
| 6 | Body part, organ, or organ component | 208 (8.6) |
2566 | Sign or symptom | 338 (5.2) |
19,601 | Therapeutic or preventive procedure | 583 (5.6) |
16,555 | |
| 7 | Sign or symptom | 145 (6.0) | 2214 | Therapeutic or preventive procedure | 331 (5.1) |
16,372 | Amino acid, peptide, or protein | 495 (4.8) |
40,521 | |
| 8 | Medical device | 134 (5.5) |
1319 | Amino acid, peptide, or protein | 305 (4.7) |
13,178 | Sign or symptom | 436 (4.2) |
38,905 | |
| 9 | Amino acid, peptide, or protein | 70 (2.9) |
1112 | Medical device | 201 (3.1) |
12,862 | Medical device | 347 (3.3) |
20,391 | |
| 10 | Biologically active substance | 69 (2.9) |
1093 | Laboratory procedure | 180 (2.8) |
10,580 | Pathologic function | 292 (2.8) |
12,551 | |
aThe percentage was calculated based on the total number of unique identified UMLS concepts: blogs in Tumblr: n=2415, questions in Yahoo! Answers: n=6452, answers in Yahoo! Answers: n=10,378