Table 2.
Demographics and clinical characteristics
| No pelvic fixation | Pelvic fixation, matched (n = 415) | p Value | ||||||
|---|---|---|---|---|---|---|---|---|
| Unadjusted (n = 3,233) | Matched (n = 415) | Unadjusted | Matched | |||||
| n | % | n | % | n | % | |||
| Sex | ||||||||
| Female | 1,809 | 55.89 | 267 | 64.18 | 272 | 65.5 | 0.0002 | 0.5140 |
| Male | 1,424 | 44.11 | 149 | 35.82 | 143 | 34.5 | ||
| Age (y) | ||||||||
| <50 | 787 | 24.3 | 57 | 13.7 | 48 | 11.5 | <0.0001 | 0.3521 |
| 51–60 | 881 | 27.3 | 83 | 20.0 | 75 | 18.0 | ||
| 61–70 | 980 | 30.3 | 160 | 38.6 | 170 | 40.9 | ||
| 71–80 | 495 | 15.3 | 90 | 21.7 | 106 | 25.5 | ||
| >80 | 90 | 2.8 | 25 | 6.0 | 17 | 4.1 | ||
| Race | ||||||||
| Caucasian | 2,620 | 81.0 | 261 | 62.9 | 340 | 81.7 | 0.0103 | <0.0001 |
| Black | 276 | 8.5 | 62 | 14.9 | 19 | 4.6 | ||
| Hispanic | 116 | 3.6 | 32 | 7.7 | 16 | 3.9 | ||
| Other | 221 | 6.8 | 60 | 14.5 | 41 | 9.9 | ||
| Obesity | 1,311 | 40.6 | 174 | 41.9 | 180 | 43.3 | 0.2708 | 0.6737 |
| ASA score ≥ 3 | 1,772 | 54.8 | 283 | 68.2 | 275 | 66.1 | <0.0001 | 0.5541 |
| Smoke | 730 | 22.6 | 57 | 13.7 | 55 | 13.2 | <0.0001 | 0.8390 |
| Dyspnea | 206 | 6.4 | 29 | 7.0 | 29 | 7.0 | 0.6303 | >0.9999 |
| Dependent functional status | 161 | 5.0 | 19 | 4.6 | 27 | 6.5 | 0.1855 | 0.2249 |
| Total relative value units | 72.02 (28.63) | 100.7 (32.99) | 100.7 (27.91) | <0.0001 | 0.9942 | |||
| Bone graft | 2,292 | 70.9 | 323 | 77.8 | 318 | 76.6 | 0.0148 | 0.6790 |
| Osteotomy | 415 | 12.8 | 232 | 55.9 | 246 | 59.3 | <0.0001 | 0.3255 |
| Intervertebral device insertion | 1,224 | 37.9 | 130 | 31.3 | 144 | 34.7 | 0.2105 | 0.3014 |
| Anterior approach | 1,768 | 54.7 | 8 | 1.9 | 12 | 2.9 | <0.0001 | 0.6290 |
Abbreviation: ASA, American Society of Anesthesiologists.