Table 2 VAS score at different time points (x ± s)
From: Endoscopic rhizotomy for chronic lumbar zygapophysial joint pain
Time point | ERFA group | Control group | t value | P value |
|---|---|---|---|---|
Cases (n) | 30 | 30 | ||
Pre MBB | 7.70 ± 0.85 | 7.56 ± 0.61 | 0.733 | 0.469 |
Post MBB | 0.49 ± 0.48 | 0.50 ± 0.53 | 0.766 | 0.940 |
Postoperative 1 day | 8.69 ± 1.07 | 8.70 ± 0.75 | 0.419 | 0.967 |
Postoperative 1 month | 3.84 ± 0.83 | 3.83 ± 0.82 | 0.469 | 0.963 |
Postoperative 3 months | 3.59 ± 0.93 | 3.55 ± 1.11 | 0.151 | 0.880 |
Postoperative 6 months | 3.61 ± 1.02 | 5.75 ± 1.67 | 5.990 | < 0.001 |
Postoperative 12 months | 3.69 ± 1.13 | 5.36 ± 1.38 | 5.129 | < 0.001 |
F value | 273.170 | 200.003 | ||
P value | <0.001 | <0.001 |