Table 2. Evaluation of cephalometric Björk and Jarabak's measurements according to sagittal skeletal class.

Skeletal class	Cephalometric measurements	X	SD	Min	Max	S2	p (1,2,3)	Multiple comparison (p)
1. Class I	NSAr	122.27	6.32	114.00	134.00	39.92	0.07**	(I, III p = < 0.001) (II, III p = 0.018)*** (I, III p = 0.001) (II, III p = 0.009)***
	SArGo	148.27	8.81	132.00	161.00	77.64	0.054*
	ArGoMe	122.87	4.05	117.00	129.00	16.41	0.001*
	ArGoN	43.32	7.84	30.70	57.60	61.49	0.001*
	MeGoN	76.48	4.89	65.20	83.30	23.87	0.124**
	NMe	118.85	6.99	106.90	132.90	48.91	0.928**
	SGo	80.99	5.47	72.70	91.50	29.97	0.152*
2. Class II	NSAr	122.73	7.51	102.00	135.00	56.35
	SArGo	149.20	8.92	138.00	167.00	79.60
	ArGoMe	125.93	6.15	116.00	139.00	37.78
	ArGoN	44.73	5.71	34.90	53.20	32.56
	MeGoN	79.32	6.49	72.60	91.30	42.08
	NMe	119.39	6.74	105.70	127.90	45.42
	SGo	78.35	4.59	72.10	88.40	21.10
3. Class III	NSAr	121.63	6.02	113.00	133.00	36.25
	SArGo	142.31	7.29	129.00	154.00	53.16
	ArGoMe	132.81	8.89	119.00	146.00	79.10
	ArGoN	51.32	3.49	43.30	56.60	12.20
	MeGoN	81.89	6.20	74.00	92.50	38.47
	NMe	120.09	9.36	109.20	135.00	87.55
	SGo	76.84	7.18	66.00	88.90	51.54

^*ANOVA.

^** Kruskal-Wallis.

^*** Tukey.