Parameter | Mean (range) | P value | |
Before visualization training, n=36 | After visualization training, n=32 | ||
Total number of attempts | 11.9 (7–27) | 9.7 (6–29) | 0.047 |
Total bone contacts | 4.9 (0–23) | 3.5 (0–23) | |
Total procedure time (s) | 279 (70–574) | 182 (53–605) | 0.01 |
Total dura contacts | 0.5 (0–5) | 0.3 (0–2) | |
Total spinal taps | 0.2 (0–4) | 0 (0) |