Table 1 Demographic characteristics of the study population and exacerbation of asthma
From: Impact of occupational exposures on exacerbation of asthma: a population-based asthma cohort study
Study population (n = 1356) | |
|---|---|
N (%) | |
Sex | |
Women | 723 (53.3) |
Men | 633 (46.7) |
Age | |
Mean (standard deviation) | 42.5 (14.2) |
Median (interquartile range) | 44.0 (25–55) |
Smoking status | |
Never smoker | 794 (58.6) |
Ex- smoker | 411 (30.3) |
Current smoker | 151 (11.1) |
Regular second hand smoke exposure in the past 12 months | 150 (11.1) |
Atopy and allergy in childhood | 981 (72.9) |
Onset of asthma after the age of 15 | 284 (20.9) |
Exacerbation of asthma | |
Mild | 107 (8.1) |
moderate | 118 (8.7) |
Severe | 133 (9.8) |