Table 3.
Surgical treatments, complications and events
| Variable | Adolescents (n = 97) | Adults, 20–50 years (n = 3,148) | p value |
|---|---|---|---|
| Level operated, no. (%) | |||
| - L2/L3 | 1 (1.0) | 18 (0.6%) | 0.559 |
| - L3/L4 | 2 (2.1) | 83 (2.6) | 0.727 |
| - L4/L5 | 55 (56.7) | 1,235 (39.2) | 0.001 |
| - L5/S1 | 39 (40.2) | 1,812 (57.6) | 0.001 |
| Operation time (minutes) | 56.6 | 54.7 | 0.488 |
| Days in hospital, no. | 1.9 | 1.5 | 0.042 |
| Any complication, no. (%) | 1 (1.0) | 159 (5.1) | 0.072 |
| Perioperative complications, no. (%) | 0 (0.0) | 63 (2.0) | 0.159 |
| - Dural tear or spinal fluid leak | 0 (0) | 35 (1.1) | 0.296 |
| - Nerve injury | 0 (0) | 6 (0.2) | 0.667 |
| - Blood replacement or postoperative haematoma | 0 (0) | 11 (0.3) | 0.560 |
| - Cardiovascular complications | 0 (0) | 1 (0.0) | 0.861 |
| - Respiratory complications | 0 (0) | 1 (0.0) | 0.861 |
| - Anaphylactic reaction | 0 (0) | 4 (0.1) | 0.725 |
| - Wrong level surgery | 0 (0) | 4 (0.1) | 0.725 |
| Complications within 3 months, no. (%) | 1 (1.5) | 100 (4.9) | 0.214 |
| - Wound infection | 0 (0) | 57 (2.8) | 0.173 |
| - Urinary tract infection | 0 (0) | 20 (1.0) | 0.424 |
| - Pneumonia | 0 (0) | 7 (0.3) | 0.637 |
| - Pulmonary embolism | 0 (0) | 0 (0) | – |
| - Deep vein thrombosis | 0 (0) | 0 (0) | – |
| - Micturition problems | 1 (1.5) | 24 (1.2) | 0.787 |