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Cranio-caudal inclination angle (CCIA), categorized into low-, medium-, and high-precision
| Skill Level | Group | Precision category | p value | ||
|---|---|---|---|---|---|
| High, − 2.5 to + 10° | Medium, − 5 to − 2.5°/+ 10 to + 20° | Low < − 5°/> + 20° | |||
| Expert | FH | 12 | 8 | 20 | 0.917 |
| AR | 13 | 9 | 18 | ||
| Novice | FH | 9 | 4 | 27 | 0.040 |
| AR | 20 | 2 | 18 | ||
