Table 1 Comparison of mean number of attempts and time taken for various tasks performed by expert and novice on day 0, 2 and 3
From: A new model of inexpensive portable homemade PERC Mentor (IPHOM) and its validation
Task given | Expert (n = 4) | Novice (n = 14) | P value | ||||
|---|---|---|---|---|---|---|---|
Mean | Std dev | Mean | Std dev | ||||
No of attempts | Identify posterior calyx | Day 0 | 1 | 0 | 2.21 | 0.57 | 0.000 |
Day 2 | 1 | 0 | 1.21 | 0.42 | 0.339 | ||
Day3 | 1 | 0 | 1 | 0 | |||
Identify needle position with respect to calyx | Day 0 | 1 | 0 | 2.64 | 0.74 | 0.000 | |
Day 2 | 1 | 0 | 1.28 | 0.46 | 0.250 | ||
Day3 | 1 | 0 | 1.07 | 0.26 | 0.608 | ||
Puncture the calyx | Day 0 | 1.25 | 0.5 | 3.35 | 0.49 | 0 | |
Day 2 | 1 | 0 | 1.64 | 0.49 | 0.022 | ||
Day3 | 1 | 0 | 1.5 | 0.51 | 0.077 | ||
Place the guidewire | Day 0 | 1.25 | 0.5 | 3 | 0.87 | 0.001 | |
Day 2 | 1 | 0 | 1.71 | 0.46 | 0.008 | ||
Day3 | 1 | 0 | 1.57 | 0.51 | 0.044 | ||
Perform bulls Eye | Day 0 | 1.5 | 0.57 | 2.85 | 0.36 | 0 | |
Day 2 | 1 | 0 | 1.64 | 0.49 | 0.022 | ||
Day3 | 1.25 | 0.5 | 1.35 | 0.49 | 0.709 | ||
Perform gradual descent | Day 0 | 1.75 | 0.5 | 3 | 0 | 0 | |
Day 2 | 1.25 | 0.5 | 2 | 0.55 | 0.027 | ||
Day3 | 1 | 0 | 1.35 | 0.63 | 0.286 | ||
Time taken(sec) | Triangulation technique | Day 0 | 57.5 | 5 | 136 | 35.33 | 0.001 |
Day 2 | 50 | 4.08 | 89.64 | 39.39 | 0.066 | ||
Day 3 | 45.25 | 4.27 | 56.78 | 19.57 | 0.268 | ||
Tract Dilatation | Day 0 | 117.5 | 34.03 | 217.72 | 66.98 | 0.007 | |
Day 2 | 85 | 5.7 | 140.71 | 66.99 | 0.061 | ||
Day 3 | 67.5 | 9.57 | 98.64 | 31.83 | 0.076 | ||
Duration of Radiation exposure | Day 0 | 87.5 | 22.17 | 200 | 68.15 | 0.007 | |
Day 2 | 68.75 | 2.5 | 127.14 | 88.78 | 0.216 | ||
Day 3 | 53.75 | 11.08 | 66.07 | 20.67 | 0.275 | ||