| Technique | Complications in 3 levels | ||
| ≥III˚ | | N.C | |
| Open | 15 | 22 | 11 |
| 20.00 | 29.33 | 14.67 | |
| 31.25 | 45.83 | 22.92 | |
| 78.95 | 73.33 | 42.31 | |
| VL | 1 | 2 | 8 |
| 1.33 | 2.67 | 10.67 | |
| 9.09 | 18.18 | 72.73 | |
| 5.26 | 6.67 | 30.77 | |
| VL converted | 3 | 6 | 7 |
| 4.00 | 8.00 | 9.33 | |
| 18.75 | 37.50 | 43.75 | |
| 15.79 | 20.00 | 26.92 | |