Table 3.
Type of Studies and European or American Articles Cited in the 10 Guidelines on Acute Sore Throat
| Type of Study | BE01 | NL02 | FR03 | FI04 | E05 | SC06 | CA07 | US08 | US09 | US10 | Total |
| Cochrane, No. | 1 | 1 | 0 | 3 | 2 | 0 | 1 | 0 | 0 | 1 | 9 |
| Other systematic reviews, No. | 9 | 6 | 4 | 1 | 4 | 5 | 0 | 4 | 0 | 1 | 34 |
| Randomized controlled trial, No. | 23 | 20 | 26 | 1 | 0 | 22 | 1 | 7 | 26 | 17 | 143 |
| Guidelines, No. | 1 | 4 | 4 | 0 | 5 | 2 | 1 | 2 | 7 | 3 | 29 |
| Overview/others | 43 | 54 | 35 | 0 | 5 | 44 | 9 | 26 | 63 | 50 | 329 |
| Total cited, No. | 77 | 85 | 69 | 5 | 16 | 73 | 12 | 39 | 96 | 72 | 544 |
| European, No. (%) | 35 (45.5) | 46 (53.5) | 27 (39.1) | 1 (20.0) | 13 (81.3) | 31 (42.5) | 0 | 1 (2.6) | 3 (3.1) | 21 (29.2) | 178 (32.7) |
| American, No. (%) | 40 (52.0) | 36 (41.9) | 39 (56.5) | 1 (20.0) | 2 (12.5) | 38 (52.1) | 11 (91.7) | 38 (97.4) | 92 (95.8) | 50 (69.4) | 347 (63.8) |
| Other, No. (%) | 2 (2.5) | 3 (4.6) | 3 (4.4) | 3 (60.0) | 1 (6.2) | 4 (5.4) | 1 (8.3) | 0 | 1 (1.1) | 1 (1.4) | 19 (3.5) |