Table 1.
Baseline characteristics of the study patients by clusters.
| Overall (n = 616) | Cluster 1 (n = 469) | Cluster 2 (n = 147) | p-value | |
|---|---|---|---|---|
| Gender | 0.301 | |||
| Male | 362 (58.77%) | 281 (59.91%) | 81 (55.10%) | |
| Female | 254 (41.23%) | 188 (40.09%) | 66 (44.90%) | |
| Age | <0.001 | |||
| Mean ± SD | 54.25 ± 10.06 | 52.03 ± 9.32 | 61.36 ± 9.01 | |
| Medium [P25, P75] | 54 [48,60] | 52 [47,57] | 60 [56,68] | |
| BMI | <0.001 | |||
| Mean ± SD | 23.21 ± 3.10 | 22.72 ± 2.89 | 24.77 ± 3.26 | |
| Medium [P25, P75] | 22.86 [21.37,24.93] | 22.49 [20.96,24.27] | 24.77 [23.30,26.62] | |
| ASIA | 0.030 | |||
| C | 230 (33.34%) | 164 (34.97%) | 66 (44.90%) | |
| D | 386 (62.66%) | 305 (65.03%) | 81 (55.1%) | |
| VAS | 0.355 | |||
| Mean ± SD | 3.65 ± 2.02 | 3.69 ± 2.01 | 3.52 ± 2.05 | |
| Medium [P25, P75] | 3 [2,6] | 3 [2,6] | 3 [2,5.5] | |
| Stability | <0.001 | |||
| Stable | 550 (89.29%) | 442 (94.24%) | 108 (73.47%) | |
| Unstable | 66 (10.71%) | 27 (5.76%) | 39 (26.53%) | |
| Segment | <0.001 | |||
| 1 | 75 (12.18%) | 67 (14.29%) | 8 (5.44%) | |
| 2 | 407 (66.07%) | 320 (68.23%) | 87 (59.18%) | |
| 3 | 120 (19.48%) | 77 (16.42) | 43 (29.25%) | |
| 4 | 14 (2.27%) | 5 (1.06%) | 9 (6.13%) | |
| Osteoporosis | 22 (3.57%) | 0 (0%) | 22 (14.97%) | <0.001 |
| Diabetes | 40 (6.49%) | 15 (3.20%) | 25 (17.01%) | <0.001 |
| HP | 104 (16.88%) | 1 (0.21%) | 103 (70.07%) | <0.001 |
| CHD | 3 (0.48%) | 0(0%) | 3 (2.04%) | 0.002 |
| HRFD | 1 (0.16%) | 0(0%) | 1 (0.68%) | 0.074 |
| CVD | 10 (1.62%) | 3 (0.64%) | 7 (4.76%) | <0.001 |
BMI: body mass index; ASIA: American Spinal Cord Injury Association; HP: hypertension; CHD: cardiovascular heart disease; CVD: cerebrovascular disease; VAS: visual analog scale; HRFD: hepatic and renal function disorder.