Table 1 Comparison of baseline data between groups
Baseline data | ULIF(n = 35) | Endo-TLIF(n = 34) | Statistic | P-value |
|---|---|---|---|---|
Gender (male, cases (%)) | 17 (48.57) | 16 (47.06) | χ2 < 0.001 | > 0.999 |
Age (\(\bar{x}\) ± s, years) | 58.80 ± 11.21 | 60.00 ± 10.71 | t=-0.455 | 0.651 |
Course of disease (\(\bar{x}\) ± s, months) | 11.16 ± 2.20 | 11.96 ± 2.21 | t=-1.499 | 0.139 |
Lesion segment (L4/5, cases (%)) | 19 (54.29) | 18 (52.94) | χ2 < 0.001 | > 0.999 |
VAS preoperative score for leg pain M (Q1,Q3) | 7.00(6.00,7.00) | 6.00(5.15,7.00) | Z=-0.617 | 0.537 |
VAS preoperative score for low back pain M (Q1,Q3) | 6.50(5.75,7.50) | 6.00(5.00,7.00) | Z=-0.590 | 0.555 |
VAS score for back pain : VAS score for leg pain M (Q1,Q3) | 1.00(0.93,1.12) | 1.00(0.81,1.16) | Z = 0.000 | 0.619 |
Preoperative ODI index | 65.03 ± 7.99 | 59.21 ± 6.46 | t = 3.334 | 0.001 |
Preoperative spinal canal area (\(\bar{x}\) ± s,mm2) | 0.66 ± 0.22 | 0.67 ± 0.23 | t = 0.014 | 0.7927 |
Preoperative intervertebral space height M (Q1,Q3)(mm) | 8.26(7.20,9.09) | 8.26(6.67,10.21) | Z=-0.234 | 0.815 |