Table 2 Operative characteristics of included patients
Characteristics | Without perioperative complication (n = 125) | With perioperative complication (n = 21) | P value |
|---|---|---|---|
LIV | Â | Â | 0.952 |
 L4 or upper | 103(70.5%) | 18(12.3%) |  |
 L5 or lower | 22(15.1%) | 3(2.1%) |  |
RBC transfusion | Â | Â | 0.233 |
  < 4u | 106(72.6%) | 15(10.3%) |  |
  > =4u | 19(13.0%) | 6(4.2%) |  |
Operative time (min) | 249.7 ± 73.4 | 260.9 ± 73.8 | 0.516 |
Length of hospital stay (day) | 13.4 ± 4.0 | 16.9 ± 6.0 | 0.017 |
Estimated blood loss (mL) | 689.9 ± 415.5 | 884.5 ± 554.6 | 0.061 |
Preoperative Hgb (g/L) | 130.9 ± 15.1 | 133.1 ± 7.3 | 0.288 |
Preoperative albumin (g/L) | 43.1 ± 3.9 | 42.6 ± 2.5 | 0.512 |
Fusion levels | Â | Â | 0.026 |
 4–10 | 56(38.4%) | 4(2.7%) |  |
 11–15 | 69(47.3%) | 17(11.6%) |  |
Instrumented vertebral levels | Â | Â | 0.258 |
 4–10 | 39(26.7%) | 4(2.7%) |  |
 11–16 | 86(58.9%) | 17(7.6%) |  |
Decompression | Â | Â | 0.375 |
 No | 123(84.2%) | 20(13.7%) |  |
 Yes | 2(1.4%) | 1(0.7%) |  |
Spinal osteotomy | Â | Â | 0.038 |
 No | 105(71.9%) | 13(8.9%) |  |
 Yes | 20(13.7%) | 8(5.5%) |  |
Cobb (°) | |||
 Preoperative | 59.1 ± 19.7 | 73.1 ± 21.9 | 0.004 |
 Postoperative | 23.8 ± 17.2 | 28.3 ± 19.4 | 0.274 |
 Change | 35.3 ± 10.2 | 44.8 ± 17.0 | 0.022 |
SVA (mm) | |||
 Preoperative | 23.2 ± 17.0 | 20.3 ± 20.8 | 0.486 |
 Postoperative | 19.4 ± 16.1 | 17.7 ± 20.9 | 0.663 |
 Change | 15.0 ± 13.7 | 19.6 ± 19.5 | 0.315 |
TK (°) | |||
 Preoperative | 29.7 ± 15.7 | 36.3 ± 18.3 | 0.086 |
 Postoperative | 30.7 ± 11.3 | 35.7 ± 13.4 | 0.076 |
 Change | 10.4 ± 9.7 | 10.1 ± 7.3 | 0.899 |
PT (°) | |||
 Preoperative | 9.6 ± 7.9 | 9.0 ± 7.8 | 0.734 |
 Postoperative | 10.3 ± 7.7 | 8.8 ± 8.3 | 0.413 |
 Change | 5.4 ± 4.6 | 5.5 ± 5.1 | 0.898 |
SS (°) | |||
 Preoperative | 30.9 ± 12.7 | 31.3 ± 14.9 | 0.900 |
 Postoperative | 28.3 ± 12.5 | 27.9 ± 15.5 | 0.894 |
 Change | 7.9 ± 10.8 | 10.4 ± 10.0 | 0.314 |
LL (°) | |||
 Preoperative | 46.4 ± 16.4 | 49.0 ± 14.9 | 0.492 |
 Postoperative | 43.8 ± 12.4 | 49.8 ± 16.1 | 0.050 |
 Change | 10.0 ± 8.0 | 11.8 ± 7.9 | 0.354 |
PI (°) | |||
 Preoperative | 39.8 ± 16.1 | 38.8 ± 20.1 | 0.810 |
 Postoperative | 37.8 ± 16.9 | 34.8 ± 21.0 | 0.456 |
 Change | 9.1 ± 12.9 | 9.6 ± 13.9 | 0.877 |
PI-LL (°) | |||
 Preoperative | 12.9 ± 14.3 | 16.7 ± 15.3 | 0.246 |
 Postoperative | 8.1 ± 8.4 | 11.1 ± 11.2 | 0.143 |
 Change | 4.7 ± 13.0 | 3.7 ± 12.0 | 0.256 |