Table 1.
Clinical characteristics of 770 shoulders in grouped datasets
| Characteristic | Training and validation sets | Internal test sets | Surgery test sets |
|---|---|---|---|
| No. of shoulders | 558 | 143 | 69 |
| Tear | 157 (28.1) | 50 (35.0) | 23 (33.3) |
| No tear | 401 (71.9) | 93 (65.0) | 46 (66.7) |
| Sex | |||
| F | 244 (43.7) | 80 (55.9) | 37 (53.6) |
| M | 314 (56.3) | 63 (44.1) | 32 (46.4) |
| Age* | 50.1 (10, 85) | 49.4 (9, 81) | 54.7 (17, 78) |
| 0–39 | 108 (19.4) | 34 (23.8) | 11 (15.9) |
| 40–49 | 126 (22.6) | 27 (18.9) | 9 (13.0) |
| 50–59 | 196 (35.1) | 44 (30.8) | 20 (29.0) |
| 60–89 | 128 (22.9) | 38 (26.6) | 29 (42.0) |
| Right | 296 (53.0) | 70 (49.0) | 36 (52.2) |
| Left | 262 (47.0) | 73 (51.0) | 33 (47.8) |
| Magnetic field strength | |||
| 1.5 T | 365 (65.4) | 96 (67.1) | 22 (31.9) |
| 3 T | 193 (34.6) | 47 (32.9) | 47 (68.1) |
| Classification of tears | |||
| Partial-thickness tears | 81 (14.5) | 25 (17.5) | 3 (4.3) |
| Full-thickness tears | 76 (13.6) | 25 (17.5) | 20 (29.0) |
| Small tears | 47 (8.4) | 12 (8.4) | 8 (11.6) |
| Medium tears | 20 (3.6) | 7 (4.9) | 6 (8.7) |
| Large tears | 5 (0.9) | 5 (3.5) | 6 (8.7) |
| Massive tears | 4 (0.7) | 1 (0.7) | 0 (0) |
Unless otherwise specified, data in parentheses are percentages
*Numbers in parentheses are the ranges