Table 6.
Degrees of improvement and multiple regression analysis of results obtained in the survey performed at three months
| Mean (SD)† | ||||||
|---|---|---|---|---|---|---|
| Total (n = 448) | LSSPAD (n = 30) | LSS (n = 418) | R 2 | β | p | |
| Symptoms (VAS) | ||||||
| Lower back pain | −17.0 (33.8) | −9.1 (40.4) | −17.6 (33.3) | 0.16 | −0.05 | 0.30 |
| Buttock or lower extremity pain | −25.8 (38.2) | −9.0 (39.7) | −27.0 (37.9) | 0.17 | −0.12 | 0.01 |
| Buttock or lower extremity numbness | −19.9 (36.2) | −4.0 (34.2) | −21.0 (36.1) | 0.19 | −0.09 | 0.06 |
| JOABPEQ | ||||||
| Lower back pain | 19.6 (37.5) | 15.8 (42.1) | 20.0 (37.2) | 0.08 | 0.01 | 0.92 |
| Lumbar function | 5.5 (31.4) | −1.5 (31.2) | 6.2 (31.2) | 0.02 | 0.07 | 0.17 |
| Walking ability | 22.0 (33.6) | 11.8 (32.7) | 22.9 (33.5) | 0.21 | 0.07 | 0.12 |
| Social life function | 13.2 (26.4) | 5.1 (24.4) | 13.9 (26.3) | 0.10 | 0.09 | 0.08 |
| Mental health | 8.1 (19.6) | 6.9 (21.2) | 8.3 (19.4) | 0.11 | 0.01 | 0.83 |
| SF-36 | ||||||
| Physical functioning | 12.7 (24.6) | 11.0 (28.2) | 13.0 (24.0) | 0.17 | −0.02 | 0.68 |
| Role physical | 6.8 (29.9) | −3.0 (32.5) | 7.7 (29.6) | 0.04 | 0.10 | 0.05 |
| Bodily pain | 15.9 (26.7) | 8.3 (27.4) | 16.7 (26.7) | 0.11 | 0.07 | 0.16 |
| General health | 5.0 (17.0) | −1.7 (19.1) | 5.8 (17.0) | 0.08 | 0.11 | 0.04 |
| Vitality | 7.9 (22.4) | 6.3 (22.7) | 8.4 (22.7) | 0.10 | 0.02 | 0.74 |
| Social functioning | 5.6 (29.9) | 5.6 (29.2) | 5.8 (30.0) | 0.02 | −0.01 | 0.82 |
| Role emotional | 5.2 (33.7) | 3.2 (33.8) | 5.6 (33.7) | 0.03 | 0.04 | 0.49 |
| Mental health | 8.3 (23.1) | 6.9 (23.8) | 8.9 (23.6) | 0.07 | 0.02 | 0.74 |
A lower score indicates better condition
JOABPEQ consists of 5 subscales. A higher score indicates better QOL
SF-36 consists of 8 subscales. A higher score indicates better QOL
VAS visual analog scale (scale 0–100 mm)
†The numbers for some items do not add up to the total number in the top row due to missing data