Table 1.

Main characteristics of the patients with diagnosis with diagnosis other than asthma [N = 1099]

	N (%)	95 % IC
Mean age [years (SD)]	58.4 (18.3)
Mean age at diagnosis of asthma (SD)	–	–
Female [n (%)]	590 (53.7)	50.6–56.6
Smoking habits
Non smokers [n (%)]	614 (55.9)	52.8–58.8
Past smokers [n (%)]	199 (18.1)	15.8–20.5
Current smokers [n (%)]	277 (25.2)	22.6–27.8
Smoking history, mean years (SD)	(14.1) 10.8	–
Concomitant diseases
Cardiovascular	445 (40.5)	37.5–43.4
Respiratory	119 (10.8)	9.0–12.8
Ear nose and throat (ENT)	171 (15.6)	13.4–17.8
Allergy	103 (9.4)	7.7–11.2
Spirometry	181 (16.5)	14.3–18.7

% accounting also for missing data

Missing data: smoking habits = 20