Table 2.

Mean Changes in Each Group and Comparison Between Groups

	Single-Step Advancement Group			Stepwise Advancement Group			Intergroup Difference
	Mean	SD	P	Mean	SD	P	P
Skeletal measurements
SNA (°)	0.23	0.52	.087	0.34	0.73	.073	.617
SNB (°)	2.04	0.80	<.001***	2.7	0.85	<.001***	.026*
ANB (°)	1.81	0.61	<.001***	2.36	0.52	<.001***	.008**
ANS horizontal (mm)	0.40	0.91	.089	0.34	0.73	.073	.833
Pg horizontal (mm)	2.2	0.89	<.001***	2.94	0.62	<.001***	.009**
Co-Gn (mm)	4.86	1.54	<.001***	5.91	1.3	<.001***	.040*
Co-Go (mm)	3.67	1.98	<.001***	3.71	1.59	<.001***	.949
SN-GoGn (°)	0.43	0.91	.293	0.21	0.53	.122	.397
A-rGo-Me (°)	0.57	1.26	.081	0.70	1.48	.069	.785
Dental measurements
U1-SN (°)	−2.01	2.88	.011*	−2.30	2.35	.001***	.742
IMPA (°)	5.82	3.43	<.001***	3.90	2.11	<.001***	.060
U6 vertical (mm)	−0.11	0.28	.125	−0.19	0.47	.115	.552
U6 horizontal (mm)	−0.84	1.95	.095	−0.37	1	.147	.386
L6 vertical (mm)	0.09	0.22	.111	0.20	0.44	.079	.366
L6 horizontal (mm)	2.25	0.41	<.001***	2.44	0.78	<.001***	.383
Overjet (mm)	−6.28	1.14	<.001***	−6.52	1.01	<.001***	.521
Overbite (mm)	−3.46	0.62	<.001***	−3.11	0.74	<.001***	.145

^*P < .05; ** P < .01; *** P ≤ .001.