Table 3.
Surgical learning curve
| Total 800 patients, N (%) | First 300 patients, N (%) | Last 500 patients, N (%) | OR (95% CI) | p value | |
|---|---|---|---|---|---|
| Revision surgery | 147 (18.4) | 82 (27.3) | 65 (13.0) | 0.40 (0.28–0.57) | <0.001 |
| Infection | 27 (3.4) | 16 (5.3) | 11 (2.2) | 0.40 (0.18–0.87) | 0.02 |
| Erosion/wound dehiscence | 12 (1.5) | 9 (3.0) | 3 (0.6) | 0.18 (0.05–0.64) | 0.003 |
| Poor/no effecta | 23 (6.0) | 14 (4.7) | 9 (1.8) | 0.04 (0.16–0.88) | 0.02 |
| Lead migration | 17 (12.1) | 12 (4) | 5 (1.0) | 0.24 (0.09–0.70) | 0.004 |
| Hardware malfunctionb | 31 (3.9) | 16 (5.3) | 15 (3.0) | 0.55 (0.27–1.13) | 0.10 |
| IPG hematoma | 31 (3.9) | 16 (5.3) | 15 (3.0) | 0.55 (0.27–1.13) | 0.10 |
| Pain | 39 (4.9) | 21 (7) | 18 (3.6) | 0.50 (0.26–0.95) | 0.03 |
Sum of all percentages exceed 100% since some patients experienced multiple complications.
aWithout lead migration.
bDisconnection, iatrogenic damage, and electrical dysfunction.