Table 4 Chi-Square test analysis of the occurrence of APAD in relation to skeletal age and the vertical skeletal pattern.
Group | Atlas posterior arch deficiency | ||
|---|---|---|---|
Present | Absent | p | |
n (%) | n (%) | ||
Cervical maturation stage | |||
Prepubertal | 9 (14.5) | 35 (14.7) | 0.552 |
Circumpubertal | 25 (40.3) | 79 (33.2) | |
Postpubertal | 28 (45.2) | 124 (52.1) | |
Vertical skeletal pattern (SN-MP angle) | |||
≤ 28° | 18 (29.0) | 96 (40.3) | 0.048* |
29° − 35° | 29 (46.8) | 112 (47.1) | |
≥ 36° | 15 (24.2) | 30 (12.6) | |
