Table 1. Demographic characteristics and Berlin questionnaire for the study population

	호흡증상 있음 (n=18)	호흡증상 없음 (n=14)	전체 (N=32)	p-value
Age (y)	5.47±1.54	6.69±1.65	5.91±1.67	0.048*
Tonsil grade	6.65±0.93	5.62±1.12	6.22±1.1	0.008*
Adenoid grade	3.25±0.68	2.54±0.88	2.94±0.85	0.093
Weught (Kg)	24.16±8.08	26.58±7.08	24.75±7.62	0.370
BMI (Kg/m2)	17.27±2.54	17.47±3.19	17.27±2.72	0.852
Pre-op. Berlin category 1	3.65±1.87	1.46±1.13	2.62±1.91	<0.001*
Post-op. Berlin category 1	0.59±0.80	0.54±0.52	0.53±0.67	0.811
Pre-op. Berlin category 2	1.06±0.75	0.38±0.65	0.81±0.78	0.046*
Post-op. Berlin category 2	0.24±0.44	0.23±0.60	0.22±0.49	0.966

p<0.05.
Op.: operation.