Table 5.

Destrictive statistics and significance probabilities of cephalometric variables

	Total (n = 75)		Stable (n = 55)		Unstable (n = 20)		U test
	x	IQR	x	IQR	x	IQR	p
PNS-ANS	0.96	0.08	0.95	0.08	0.97	0.09	.101
Ar-Me	1.04	0.06	1.03	0.07	1.05	0.07	.024*
SNA	79.70	4.90	79.50	4.90	80.45	3.63	.260
SNB	79.80	3.90	79.40	4.10	80.40	4.43	.065
ANB	0.00	2.90	0.20	2.90	-0.90	2.28	.081
Wits	-6.60	3.40	-6.20	3.30	-7.70	2.75	.035*
SN-Ar	124.60	5.60	124.80	5.50	124.20	7.38	.573
SN-Rm	90.20	7.30	90.70	6.50	87.50	6.40	.049*
SN-Md	36.90	6.70	36.90	6.70	36.85	6.23	.480
Gonial angle	126.00	9.00	125.10	8.90	129.50	6.83	.024*
U1-PP	102.90	10.60	102.70	10.80	105.25	12.10	.253
IMPA	89.10	10.50	89.80	8.00	83.05	7.93	.009*
FMIA	60.90	9.50	59.30	9.60	65.05	9.43	.025*

Statistical powers were from 0.822 to 0.840; Effect size d =0.8 (x median, IQR interquartile range, *: p < .05)