Table 2. Cephalometric parameters before and after the adenotonsillectomy (p value for comparison between pre-surgery and post-surgery data)

	호흡증상 있음 (n=18)			호흡증상 없음 (n=14)
	Pre-op	Post-op	p-value	Pre-op	Post-op	p value
Berlin category 1	3.65±1.87	0.59±0.80	＜0.001*	1.46±1.13	0.54±0.52	0.028*
Berlin category 2	1.06±0.75	0.24±0.44	＜0.001*	0.38±0.65	0.23±0.60	0.104
SNA angle (˚)	85.12±4.84	87.02±6.13	0.150	89.52±4.89	91.35±4.98	0.019*
SNB angle (˚)	79.37±4.84	78.36±3.85	0.425	82.05±4.17	82.38±4.20	0.356
ANB angle (˚)	8.17±2.39	7.97±3.48	0.033*	8.17±3.00	9.14±2.16	0.014*

p<0.05.
Op.: operation, SNA: angle between sella, nasion and subspinal point A), SNB: angle between sella, nasion and supramental point B), ANB: angle between maxilla and the mandible.