Table 2.
The baseline of patient characteristics.
| Characteristics | Total N = 1144 | Training set N = 800 (69.9%) | Validation set N = 229 (20.0%) | Test set N = 115 (10.1%) | |
|---|---|---|---|---|---|
| Age | <15 | 269 (23.5%) | 188 (23.5%) | 54 (23.6%) | 27 (23.5%) |
| 15–25 | 735 (64.2%) | 515 (64.4%) | 147 (64.2%) | 73 (63.5%) | |
| >25 | 140 (12.3%) | 97 (12.1%) | 28 (12.2%) | 15 (13.0%) | |
|
| |||||
| Gender | Female | 516 (45.1%) | 361 (45.1%) | 103 (45.0%) | 52 (45.2%) |
| Male | 628 (54.9%) | 439 (54.9%) | 126 (55.0%) | 63 (54.8%) | |
|
| |||||
| Marital status | Married | 179 (15.6%) | 124 (15.5%) | 36 (15.7%) | 19 (16.5%) |
| Unmarried | 965 (84.4%) | 676 (84.5%) | 193 (84.3%) | 96 (83.5%) | |
|
| |||||
| SES | Low SES | 437 (38.1%) | 306 (38.3%) | 87 (38.0%) | 44 (38.3%) |
| High SES | 707 (61.9%) | 494 (61.8%) | 142 (62.0%) | 71 (61.7%) | |
|
| |||||
| Surgery | Yes | 1015 (88.7%) | 710 (88.8%) | 203 (88.6%) | 102 (88.7%) |
| No | 129 (11.3%) | 90 (11.3%) | 26 (11.4%) | 13 (11.3%) | |
|
| |||||
| Grade | Low grade | 230 (20.1%) | 161 (20.1%) | 46 (20.1%) | 23 (20.0%) |
| High grade | 914 (79.9%) | 641 (80.1%) | 183 (79.9%) | 90 (78.3%) | |
|
| |||||
| Location | Axial | 163 (14.2%) | 113 (14.1%) | 33 (14.4%) | 17 (14.8%) |
| Extremity | 774 (67.7%) | 542 (67.8%) | 155 (67.7%) | 77 (67.0%) | |
| Other | 207 (18.1%) | 145 (18.1%) | 41 (17.9%) | 21 (18.3%) | |