A Role of the ABCC4 Gene Polymorphism in Airway Inflammation of Asthmatics

Table 1

Clinical characteristics of study subjects.

	Asthmatics; ()	NC; ()	value
Age (years)^†	43.80 ± 13.85	27.04 ± 7.17/98	<0.001
Male (%)^‡	58.21	38.35	<0.001
Atopy (%)^†	48.50	NA	NA
Total IgE (kU/L)^†	0.431 ± 0.9	NA	NA
Rhinosinusitis (%)^‡	83.75	NA	NA
Nasal polyp (%)^‡	39.44	NA	NA
FEV1 (%)^†	85.69 ± 20.30	NA	NA
PC20 methacholine; (mg/mL)	9.17 ± 15.99	NA	NA
Asthma duration; (years)^†	7.69 ± 15.97	NA	NA

NC: normal control; n: number of subjects; NA: not applicable; FEV₁: forced expiratory volume in 1 s; PC₂₀ methacholine: provocative concentration of methacholine producing a 20% fall in FEV₁. ^†This value was presented as mean ± SD, whereas ^‡ value was shown as percentage. Values in bold indicate significant value. Each value <0.05 was considered to be significant. value was obtained by t-test for continuous variables and the χ² test for categorical variables.