Table 2 Demographic data and perioperative outcomes
Early learning period (n = 19) | Late learning period (n = 30) | p value | |
|---|---|---|---|
Sex, Male/Female (Male %) | 15:4 (78.9) | 21:9 (70.0) | 0.719 |
Age (years) | 50.63 ± 10.76 | 54.60 ± 7.78 | 0.174 |
Height (cm) | 169.63 ± 7.65 | 167.17 ± 8.59 | 0.301 |
Weight (kg) | 70.11 ± 8.94 | 68.63 ± 10.66 | 0.605 |
Body mass index (kg/m2) | 24.32 ± 2.32 | 24.52 ± 3.07 | 0.8 |
ASA score 2 (%) | 7 (36.8) | 29 (96.7) | < 0.001 |
Diagnosis (%) | 0.216 | ||
Contained foraminal HIVD | 11 (57.9) | 10 (33.3) | |
Uncontained foraminal HIVD | 4 (21.1) | 7 (23.3) | |
Foraminal stenosis | 4 (21.1) | 13 (43.3) | |
Level (%) | 0.182 | ||
C4-5 | 3 (15.8) | 0 (0.0) | |
C5-6 | 6 (31.6) | 9 (30.0) | |
C6-7 | 8 (42.1) | 16 (53.3) | |
C7-T1 | 2 (10.5) | 5 (16.7) | |
Side, Right/Left (Right %) | 12:7 (63.2) | 15:15 (50.0) | 0.544 |
Operation time (min) | 71.84 ± 12.61 | 67.83 ± 10.31 | 0.254 |
Length of hospital stay (days) | 2.74 ± 1.52 | 3.20 ± 1.99 | 0.363 |
Surgical drainage (ml) | 55.53 ± 27.45 | 40.97 ± 15.57 | 0.045 |
Complication (%) | 3 (15.8) | 1 (3.3) | 0.285 |
Incomplete neural decompression | 2 (10.5) | 0 (0.0) | |
Epidural hematoma | 1 (5.3) | 1 (3.3) | |
Reoperation (%) | 1 (5.3) | 0 (0.0) | 0.388 |