Table 1.
Clinical characteristics of the study groups.
| NMS (N=81) | AIS (N=199) | p value* | |
|---|---|---|---|
| Age | 15.2 ± 3.4 | 15.6 ± 2.1 | p = 0.201 |
| Gender (M/F) | 44/37 | 56/143 | p<0.001 |
| Major curve, degrees Preoperatively Postoperatively |
72 ± 18 20 ± 12 |
52 ± 8 12 ± 5 |
p<0.001 p<0.001 |
| Pelvic instrumentation, n (%) | 63 (77) % | 0/0 | |
| Osteotomies, n, mean ± SD | 39, 3.49 ± 0.25 | 49, 2.96 ± 0.22 | 0.1920 |
| Intraoperative bleeding (mL) | 1085 ± 1049 | 554 ± 349 | p< 0.001 |
| Drain output (mL) | 566 ± 208 | 489 ± 188 | p =0.0294 |
| Hidden blood loss (mL) | 566 ± 533 | 398 ± 411 | p = 0.0332 |
| Total measured bleeding (mL) | 1348 ± 1066 | 965 ± 453 | p <0.001 |
| Total bleeding (mL) | 1914 ± 1006 | 1358 ± 544 | p < 0.001 |
| Posterior time (h) | 4.2 ± 0.13 | 3.08 ± 0.07 | p < 0.001 |
Values are Mean ± SD for continuous variables and numbers (percentages) for categorical variables.
⁎
Statistical comparisons were performed using Mann-Whitney U -test for continuous variables and x2-test for categorical variables.