Table 1 Patient characteristics by the external cause of injury.
Overall (n = 1512) | Falls (n = 1153) | Traffic accidents (n = 287) | Others (including unspecified) (n = 72) | |
|---|---|---|---|---|
Pre-injury patient demographics | ||||
Mean age at injury (years) | 75.8 | 76.2 | 74.8 | 73.2 |
Sex: men, n (%) | 1007 (66.6) | 782 (67.8) | 166 (57.8) | 59 (81.9) |
Mean body mass index (kg/m2) | 22.1 | 22.1 | 22.1 | 22.3 |
Residence status: home, n (%) | 1439 (97.0) | 1093 (96.3) | 276 (99.3) | 70 (100) |
Walking capacity: walking w/ or w/o a cane, n (%) | 1431 (95.5) | 1084 (94.8) | 281 (98.6) | 66 (94.3) |
Mean Charlson comorbidity index | 0.8 | 0.8 | 0.6 | 0.7 |
Mean number of medications | 3.9 | 4.1 | 3.0 | 3.9 |
Mean modified 5-item frailty index | 0.8 | 0.8 | 0.7 | 0.8 |
Presence of cervical ligamentous ossification | ||||
OPLL, n (%) | 332 (22.0) | 270 (23.4) | 45 (15.7) | 17 (23.6) |
OLF, n (%) | 25 (1.7) | 21 (1.8) | 4 (1.4) | 0 (0) |
DISH, n (%) | 189 (12.5) | 156 (13.6) | 24 (8.4) | 9 (12.5) |
Injury status | ||||
Cervical vertebral fracture, n (%) | 834 (55.2) | 595 (51.6) | 198 (69.0) | 41 (56.9) |
Cervical dislocation, n (%) | 229 (15.2) | 162 (14.1) | 59 (20.6) | 8 (11.1) |
Spinal cord injury, n (%) | 1056 (69.8) | 835 (72.4) | 171 (59.6) | 50 (69.4) |
w/ bony injury, n (%) | 441 (29.2) | 321 (27.8) | 97 (33.8) | 23 (31.9) |
w/o bony injury, n (%) | 615 (40.7) | 514 (44.6) | 74 (25.8) | 27 (37.5) |
ASIA impairment scale | ||||
A, n (%) | 125 (8.3) | 96 (8.4) | 23 (8.0) | 6 (8.3) |
B, n (%) | 68 (4.5) | 57 (5.0) | 8 (2.8) | 3 (4.2) |
C, n (%) | 336 (22.3) | 266 (23.2) | 52 (18.2) | 18 (25.0) |
D, n (%) | 519 (34.5) | 409 (35.7) | 87 (30.4) | 23 (31.9) |
Associated injuries, n (%) | 411 (27.2) | 269 (23.3) | 134 (46.7) | 8 (11.1) |
Treatment status | ||||
Surgery implementation, n (%) | 903 (59.7) | 676 (58.6) | 174 (60.6) | 53 (73.6) |
