Table 1 Subject characteristics for u-PROs and matched f-PROs
Variables | Overall (n = 183) | u-PROs (n = 61) | f-PROs (n = 122) | p-value |
|---|---|---|---|---|
Age | 65.4 ± 12.1 | 64.8 ± 10.7 | 65.9 ± 14.4 | 0.761 |
Gender | 0.46 | |||
Female | 104(56.8%) | 37(60.7%) | 67(54.9%) | |
Male | 79(43.2%) | 24(39.3%) | 55(45.1%) | |
BMI | 24.5 ± 4.3 | 24.8 ± 3.8 | 24.3 ± 3.3 | 0.917 |
CCI | 1.9 ± 0.8 | 2.3 ± 0.8 | 1.7 ± 0.6 | < 0.001 |
ASA | 1.7 ± 0.6 | 2.0 ± 0.7 | 1.5 ± 0.6 | < 0.001 |
Symptom duration | 14.9 ± 5.6 | 17.3 ± 7.1 | 11.5 ± 6.8 | < 0.001 |
Frailty | 76 (41.5%) | 29 (47.5%) | 47 (38.5%) | 0.243 |
TK (°) | 27.3 ± 14.9 | 28.1 ± 18.4 | 30.7 ± 16.5 | 0.678 |
LL (°) | 23.7 ± 12.6 | 16.4 ± 15.7 | 27.8 ± 14.4 | < 0.001 |
PT (°) | 26.4 ± 9.7 | 23.6 ± 10.9 | 30.3 ± 8.8 | < 0.001 |
PI (°) | 48.1 ± 11.2 | 47.8 ± 9.8 | 49.5 ± 10.2 | 0.782 |
SVA (°) | 73.2 ± 44.7 | 105.8 ± 44.7 | 47.6 ± 25.9 | < 0.001 |
TPA (°) | 23.0 ± 6.3 | 22.3 ± 5.8 | 23.5 ± 7.6 | 0.889 |
Number of fused levels | 6.9 ± 2.6 | 7.1 ± 2.9 | 6.7 ± 2.5 | 0.365 |
Surgical approach | 0.914 | |||
Posterior | 113(61.7%) | 38(62.3%) | 75(61.5%) | |
Anterior and posterior | 70(38.3%) | 23(37.7%) | 47(38.5%) | |
Operative time | 351.4 ± 87.9 | 364.3 ± 66.8 | 332.8 ± 90.1 | 0.601 |
EBL | 954.3 ± 598.7 | 998.7 ± 623.9 | 878.2 ± 612.4 | 0.445 |
Intraoperative blood fusion | 985.2 ± 623.1 | 1068.7 ± 668.4 | 892.5 ± 588.2 | 0.273 |
Reoperation | 21(11.5%) | 12(19.7%) | 9(7.4%) | 0.014 |
Major complications | 39(21.3%) | 17(27.9%) | 22(18.0%) | 0.126 |