Table 2.

Primary lateral cephalogram measures and comparison to population norms

Variable	Sample Mean ± SD (mm)	Population Mean ± SD (mm)18, 19
SNA	81.1 ± 0.66	82.0 ± 3.5
SNB	78.3 ± 0.65	80.0 ± 3.0
PNSP	39.8 ± 0.57	37.2 ± 4.7
MPH	22.5 ± 0.88*	15 ± 2.0
PAS (Airway 6)	10.4 ± 0.55	9.30 ± 3.1
Airway 1	10.7 ± 3.3	9.1 ± 1.8
Airway 2	22.7 ± 4.5	23.2 ± 3.2
Airway 3	24.2 ± 4.2	25.7 ± 2.9
Airway 4	7.0 ± 3.4*	10.1 ± 2.8
Airway 5	8.2 ± 2.5*	11.8 ± 2.8
Airway 7	18.6 ± 4.7	18.6 ± 2.3

^*Different from population normal values (p < 0.05)