Table 1.

Characteristics of study subjects

Group	Patients with asthma	Control subjects
N	25	12
Age (y)	50 (24–69)	42 (26–62)
Sex (M/F)	8/17	10/2
FEV1 (% predicted)	86.6 (45.6–122.1)‡	103.7 (95.1–123.5)
FEV1/FVC (%)	72.4 (48.9–87.4)‡	85.6 (75.0–94.7)

Data are expressed as median (range).

M, Male; F, female; FEV₁, forced expiratory volume in 1 sec; FVC, forced vital capacity.

‡P < .001 compared with the control group.