Table 1

Group	Gender, %		Age, years M (SD)	Occlusion, %
Group	Male	Female	Age, years M (SD)	Normal	Mandibular retrognathia	Bimaxillary retrognathia
A (n = 7)	100	66.7	52.2 (8.3)	28.6	57.1	14.3
B (n = 6)	0	33.7	44.0 (4.7)	0	83.3	16.7
P value	0.2^a		0.03^b	χ² = 2.0; df = 2; P = 0.7^c

^aBy Fisher's Exact Test.
^bBy Mann-Whitney test.
^cBy Chi-Square test.
M (SD) = mean (standard deviation).