Table 3.
Comparing Binary Clinical Outcomes.a
| Bivariateb | Multivariateb | ||||||
|---|---|---|---|---|---|---|---|
| Central/Paracentral | Far Lateral | All Patients | β | P | β | P | |
| Change preoperative to final | |||||||
| VAS back | 5.16 ± 3.28 | 4.47 ± 3.36 | 5.06 ± 3.26 | −6.98 | .633 | −0.05 | .977 |
| VAS leg | 5.09 ± 4.62 | 6.57 ± 1.22 | 5.30 ± 4.32 | 1.48 | .443 | 4.38 | .055 |
| ODI | 35.53 ± 20.06 | 9.26 ± 13.68 | 31.33 ± 25.25 | −26.27 | .001 | −24.50 | .010 |
| SF-12 mental | −1.04 ± 8.97 | 1.96 ± 12.26 | −0.375 ± 9.47 | 3.00 | .592 | −18.05 | .344 |
| SF-12 physical | −9.58 ± 13.88 | −1.81 ± 12.77 | 3.22 ± 13.68 | 7.77 | .331 | 11.86 | .612 |
| VR-12 mental | −2.86 ± 10.11 | 2.01 ± 10.92 | −1.56 ± 10.18 | 4.88 | .432 | −8.38 | .706 |
| VR-12 physical | −12.84 ± 14.01 | −1.41 ± 14.99 | −9.79 ± 14.69 | 11.43 | .192 | 27.19 | .195 |
Abbreviations: ODI, Oswestry Disability Index; SF-12, 12-Item Short Form Mental and Physical Survey; VAS, Visual Analog Scale; VR-12, Veterans RAND 12-Item Mental and Physical Survey.
aValues in boldface indicate statistical significance (P ≤ .02).
bCentral/Paracentral used as reference group.