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Comparison of relationships about the round window.
| Relationship | Average Pediatric Angle (SD) | Average Adult Angle (SD) | P value |
|---|---|---|---|
| ⊥RW:TRJ | 41.39 (1.30) | 39.47 (1.39) | 0.003 |
| ⊥RW:⊥FR | 30.43 (0.94) | 36.67 (1.00) | 0.009 |
(SD=standard deviation; ⊥RW=line perpendicular to the plane of the round window; ⊥FR=line perpendicular to the facial recess; TRJ=ideal drilling trajectory for cochleostomy)
