Table 1 Distribution of study subjects by residency year and mean performance rating scores
From: Phantom model and scoring system to assess ability in ultrasound-guided chest drain positioning
Year | N (%) | PRS (SD) | Group | N (%) | PRS (SD) |
|---|---|---|---|---|---|
1 | 4 (12.9) | −1.25 (2.5) | Novice | 20 (64.5) | 0.75 (4.38) |
2 | 8 (25.8) | 0.00 (2.67) | |||
3 | 8 (25.8) | 2.50 (5.98) | |||
4 | 5 (16.1) | 6.00 (4.18) | Expert | 11 (35.5) | 5.91 (3.75) |
5 | 6 (19.4) | 5.83 (3.76) | |||
Total | 31 (100) | p = 0.025 | 31 (100) | p = 0.0026 |