Table 3.

ANOVA of cephalometric variables in three OSA severity groups (1 = mild OSA; 2 = moderate OSA; 3 = severe OSA).

ANOVA
		Sum of Squares	df	Mean Square	F	Sig.
SNA angle	Between groups	17,051	2	8525	0.938	0.404
	Within groups	245,381	27	9088
	Total	262,432	29
SNB angle	Between groups	11,414	2	5707	0.433	0.653
	Within groups	355,725	27	13,175
	Total	367,139	29
ANB angle	Between groups	853	2	426	0.052	0.949
	Within groups	219,421	27	8127
	Total	220,274	29
FMA angle	Between groups	4312	2	2156	0.045	0.956
	Within groups	1,302,595	27	48,244
	Total	1,306,907	29
AO-BO	Between groups	7748	2	3874	0.175	0.840
	Within groups	597,539	27	22,131
	Total	605,287	29
Occlusal plane angle	Between groups	2350	2	1175	0.046	0.955
	Within groups	682,843	27	25,290
	Total	685,194	29
PFH	Between groups	506,211	2	253,105	2.132	0.138
	Within groups	3,205,448	27	118,720
	Total	3,711,659	29
AFH	Between groups	111,739	2	55,870	0.632	0.539
	Within groups	2,387,451	27	88,424
	Total	2,499,190	29
SPAS	Between groups	6855	2	3427	0.547	0.585
	Within groups	169,140	27	6264
	Total	175,995	29
PAS	Between groups	11,703	2	5852	1.225	0.310
	Within groups	129,006	27	4778
	Total	140,710	29
MP-H	Between groups	5243	2	2622	0.079	0.925
	Within groups	900,285	27	33,344
	Total	905,528	29
Pns-P	Between groups	40,620	2	20,310	0.540	0.589
	Within groups	1,015,350	27	37,606
	Total	1,055,970	29
H-C3	Between groups	15,113	2	7557	0.198	0.821
	Within groups	1,029,136	27	38,116
	Total	1,044,250	29