Table 6 Univariate ordered logistic regression analysis for the factors associated with the degree of postoperative numbness at 12-months
Variables | BNI I | BNI II | BNI III-IV | LR-test | P | OR | 95% Confidence Interval |
|---|---|---|---|---|---|---|---|
Age (years) (mean ± SD) | 61.7 ± 13.1 | 61.5 ± 10.4 | 63.1 ± 9.1 | 0.47 | 0.416 | 1.01 | 0.99–1.03 |
Sex, n (%) | 0.52 | ||||||
Male | 23 (25.6%) | 41 (45.6%) | 26 (28.9%) | 0.558 | 1.15 | 0.71–1.59 | |
Female | 48 (30.6%) | 65 (41.4%) | 44 (28.0%) | ||||
Affected side, n (%) | 0.68 | ||||||
Right | 44 (28.4%) | 65 (41.9%) | 46 (29.7%) | 0.649 | 0.89 | 0.55–1.46 | |
Left | 27 (29.3%) | 41 (44.6%) | 24 (26.1%) | ||||
Distribution of pain, n (%) | 0.59 | ||||||
V2 | 17 (31.5%) | 26 (48.1%) | 11 (20.4%) | ||||
V3 | 22 (33.3%) | 26 (39.4%) | 18 (27.3%) | 0.745 | 1.12 | 0.57–2.18 | |
V2 + V3 | 32 (25.2%) | 54 (42.5%) | 41 (32.3%) | 0.147 | 1.55 | 0.86–2.11 | |
Disease duration (months) (mean ± SD) | 58.1 ± 66.4 | 61.8 ± 60.0 | 80.5 ± 89.2 | 0.56 | 0.048* | 1.00 | 1.00–1.01 |
Pain characteristic | 0.46 | ||||||
Paroxysmal | 65 (31.0%) | 94 (44.8%) | 51 (24.3%) | 0.001* | 0.33 | 0.17–0.65 | |
Continuous | 6 (16.2%) | 12 (32.4%) | 19 (51.4%) | ||||
Co-morbidity, n (%) | 0.76 | ||||||
Diabetes mellitus | 8 (32%) | 10 (40%) | 7 (28%) | 0.798 | 0.90 | 0.42–1.95 | |
No diabetes mellitus | 63 (28.4%) | 96 (43.2%) | 63 (28.4%) | ||||
History of previous procedure at the affected side, n (%) | 0.46 | ||||||
Previous RFT | 9 (20.9%) | 13 (30.2%) | 21 (48.8%) | 0.002* | 2.79 | 1.47–5.26 | |
Previous MVD | 2 (14.3%) | 7 (50%) | 5 (35.7%) | 0.137 | 2.17 | 0.78–6.02 | |
Other | 2 (16.7%) | 5 (41.7%) | 5 (41.7%) | 0.112 | 2.44 | 0.81–7.34 | |
None | 58 (32.6%) | 81 (45.5%) | 39 (21.9%) | ||||
Treatment, n (%) | 0.81 | ||||||
RFT | 19 (19.6%) | 42 (43.3%) | 36 (37.1%) | ||||
Coblation | 52 (34.7%) | 64 (42.7%) | 34 (22.7%) | 0.003* | 0.48 | 0.30–0.78 | |
Baseline NRS score (mean ± SD) | 7.68 ± 1.36 | 7.81 ± 1.32 | 7.53 ± 1.29 | 0.22 | 0.513 | 0.94 | 0.79–1.12 |
NRS score at discharge (mean ± SD) | 1.15 ± 1.01 | 1.08 ± 1.07 | 1.39 ± 1.53 | 0.28 | 0.235 | 1.12 | 0.93–1.36 |