Table 2. General clinical characteristics of patients with chronic cough.

Variables	Outcome
N (M/F)	139 (51/88)
Age (yr, $\overline{x}\pm s$)	45.0±20.0
Course of cough (month)	12 [55]
RSI score (point)	13.1±6.4
Cough symptom score (point)
Daytime	3 [1]
Nighttime	2 [1]
Lung function (%, $\overline{x}\pm s$)
Predicted FEV1 (%)	99.6±13.5
Predicted FVC (%)	101.8±14.3
FEV1/FVC%	82.9±7.4