Table 1 Comparison of baseline and injury characteristics between patients with or without neuropathic pain after traumatic spinal cord injury
Characteristics | All (N = 320) | Neuropathic pain (DN4-positive, N = 155) | No neuropathic pain (DN4-negative, N = 165) | P value |
|---|---|---|---|---|
Age (y) | 56.5 (13.2) | 56.8 (11.8) | 56.3 (14.6) | 0.714* |
Sex |  |  |  | 0.217†|
Female | 75 (23.4) | 41 (26.5) | 34 (20.6) | Â |
Male | 245 (76.6) | 114 (73.5) | 131 (79.4) | Â |
Age at injury (y) | 57.1 (13.5) | 58.8 (14.8) | 55.6 (11.9) | 0.031* |
Time post-injury (y) | 5.6 (3.8) | 5.2 (3.5) | 5.7 (3.6) | 0.364* |
Body mass index (kg/m2) |  |  |  | 0.660†|
 < 24 | 132 (41.3) | 62 (40.0) | 70 (42.4) |  |
 ≥ 24 | 188 (58.8) | 93 (60.0) | 95 (57.6) |  |
Current smoker | 72 (22.5) | 35 (22.6) | 37 (22.4) | 0.973†|
Etiology |  |  |  | 0.513†|
Falls | 163 (50.9) | 74 (47.7) | 89 (53.9) | Â |
Traffic accident | 114 (35.6) | 62 (19.4) | 52 (31.5) | Â |
Violence | 16 (5.0) | 7 (4.5) | 9 (5.5) | Â |
Others | 27 (8.4) | 12 (7.8) | 15 (9.1) | Â |
ISS |  |  |  | 0.034†|
 < 16 | 238 (74.4) | 107 (69.0) | 131 (79.4) |  |
 ≥ 16 | 82 (25.6) | 48 (31.0) | 34 (20.6) |  |
AIS grade |  |  |  | 0.026†|
A | 112 (35.0) | 67 (43.2) | 45 (27.3) | Â |
B | 45 (14.1) | 18 (11.6) | 27 (16.4) | Â |
C | 78 (24.4) | 32 (20.6) | 46 (27.9) | Â |
D | 85 (26.6) | 38 (24.5) | 47 (28.5) | Â |
Neurological level of injury |  |  |  | 0.691†|
High cervical (C1–C4) | 101 (31.6) | 50 (32.3) | 51 (30.9) |  |
Low cervical (C5–T1) | 136 (42.5) | 68 (43.9) | 68 (41.2) |  |
Thoracic (T2–T10) | 36 (11.2) | 14 (9.0) | 22 (13.3) |  |
Thoracolumbar (T11–L2) | 47 (14.9) | 23 (14.8) | 24 (14.5) |  |
Baseline neurological examination time (hours post-injury): | 13.8 (10.2) | 12.6 (10.1) | 14.3 (11.8) | 0.595* |
Time from injury to surgery, hours | 44.2 (29.7) | 45.5 (29.6) | 38.4 (25.6) | 0.023* |
Treated with high-dose methylprednisolone | 126 (39.4) | 63 (40.6) | 48 (29.1) | 0.030†|
LOS, days | 26.0 (20.1) | 26.6 (22.8) | 25.4 (17.4) | 0.594* |
Total cost, ¥ | 95,378.2 (62,753.9) | 92,904.9 (61,788.1) | 97,996.2 (63,857.2) | 0.471* |
Follow-up duration, months | 36.5 (26.8) | 35.9 (28.2) | 36.6 (26.1) | 0.689* |