Table 2.
Complete case analysis for ODI
| Variable | Paramedian LDH (n = 1124) | Extraforaminal LDH (n = 55) | Difference in mean change between groups (95% CI) | P value | ||||
|---|---|---|---|---|---|---|---|---|
| Baseline | 1 year | Mean Change | Baseline | 1 year | Mean change | |||
| ODI | 49.22 | 17.21 | − 32.01 | 56.43 | 20.00 | − 36.43 | 4.42 (− 2.18 to 11.0) | 0.189 |
| EQ-5D | 0.22 | 0.72 | 0.50 | 0.13 | 0.64 | 0.50 | 0.00 (− 0.1 to 0.1) | 0.943 |
| Back pain NRS | 6.59 | 2.96 | − 3.62 | 7.33 | 3.35 | − 3.98 | 0.36 (− 0.5 to 1.3) | 0.426 |
| Leg pain NRS | 7.12 | 2.40 | − 4.68 | 7.53 | 3.09 | − 4.43 | − 0.24 (− 1.2 to 0.7) | 0.610 |
| Mixed linear model analyses | ||||||||
| ODI | 48.39 | 17.48 | − 30.92 | 53.97 | 19.97 | − 34.00 | 3.08 (− 3.06 to 9.22) | 0.325 |
| EQ-5D | 0.22 | 0.72 | 0.50 | 0.14 | 0.65 | 0.51 | 0.01 (− 0.12 to 0.10) | 0.859 |
| Back pain NRS | 6.66 | 2.97 | − 3.69 | 7.08 | 3.26 | − 3.83 | 0.14 (− 0.70 to 0.99) | 0.745 |
| Leg pain NRS | 7.11 | 2.41 | − 4.69 | 7.45 | 3.00 | − 4.46 | − 0.23 (− 1.13 to 0.66) | 0.607 |
(EQ-5D, n = 1059 [ELDH = 49]; NRS back pain, n = 1147 [ELDH = 52]; NRS leg pain, n = 1145 [ELDH = 53])