Table 2.

Basic data of asthmatic children with small airway obstruction in each group.

Item	Group A	Group B	Group C	F	P
Age (year)	6.43 ± 1.25	6.58 ± 1.05	6.63 ± 1.02	−2.650	0.674
Gender (male/female)	0.54 ± 0.52	0.49 ± 0.53	0.52 ± 0.50	0.421	0.643
BMI (kg/m2)	24.07 ± 3.24	23.97 ± 3.36	24.28 ± 3.12	0.088	0.765
Course (month)	21.37 ± 8.95	19.48 ± 9.88	20.64 ± 10.03	1.265	0.279
Interval of medication (h)	9.65 ± 6.91	6.97 ± 5.65	8.62 ± 7.84	0.786	0.426
MMEF75/25	2.12 ± 0.59	2.13 ± 0.48	1.97 ± 0.53	0.71	0.456
FEF50	2.36 ± 0.56	2.27 ± 0.43	2.40 ± 0.46	0.581	0.534
FEF75	1.28 ± 0.19	1.27 ± 0.26	1.18 ± 0.22	2.282	0.102
FeNO (ppb)	34.78 ± 1.98	35.01 ± 2.21	34.78 ± 2.04	0.289	0.732