Skip to main content

Table 5 Baseline characteristics of patients according to their FEV1/FVC ratio at T0

From: Diisocyanate-induced asthma in Switzerland: long-term course and patients’ self-assessment after a 12-year follow-up

  FEV1/FVC ≥ 0.7 (n = 25) FEV1/FVC < 0.7 (n = 10) p-value
Age (years) 37 ± 14 42 ± 9 0.34
FEV1% predicted 95 ± 13 83 ± 20 <0.001
Current smoking 7 (28%) 3 (30%) 1.00
Pack years* 5 (12) 20 (20) <0.001
Total exposure time (months) 44 (80) 145 (143) 0.16
Symptomatic exposure time (months) 11 (15) 19 (33) 0.31
  1. Legend: FVC = forced expiratory vital capacity. FEV1 = forced expiratory volume in 1 second. *Pack-years for smokers and ex-smokers added.
  2. Data is presented as mean ± SD, median and interquartile range (IQR) or number (%).