Cough

Table 1 Comparison of characteristics between non-smokers and smokers

From: Perception of urge-to-cough and dyspnea in healthy smokers with decreased cough reflex sensitivity

	Non-smokers	Smokers	P- value
Number	14	14
Age (years)	30.4 ± 3.4	29.6 ± 4.5	n.s.
Height (cm)	173.8 ± 3.5	172.7 ± 4.7	n.s.
Weight (kg)	69.2 ± 13.8	65.9 ± 9.2	n.s.
Pack-years	0 ± 0	5.6 ± 4.9
FEV₁ (L)	4.16 ± 0.54	4.03 ± 0.46	n.s.
FEV₁ (% predict)	104.5 ± 11.6	101.9 ± 13.0	n.s.
FVC (L)	4.86 ± 0.63	4.64 ± 0.55	n.s.
FVC (% predict)	107.8 ± 30.7	115.2 ± 13.3	n.s.
FEV₁/FVC (%)	85.8 ± 4.6	86.9 ± 3.6	n.s.

Data are mean ± S.D. P-values were calculated by the Mann-Whitney U test. n.s. denotes not significant.

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