Table 1 Baseline characteristics of the study subjects
From: Fine particulate matter aggravates smoking induced lung injury via NLRP3/caspase-1 pathway in COPD
|  | Total (n = 105) |
|---|---|
Age, years | 68.2 ± 7.2 |
Male sex | 97 (92.4) |
Current smoker | 23 (21.9) |
Post-bronchodilator FEV1, L | 1.6 ± 0.6 |
Post-bronchodilator FEV1, % predicted | 53.9 ± 16.5 |
SGRQ-C score | 37.5 ± 21.8 |
History of acute exacerbation | 41 (39.0) |
Outdoor PM2.5 concentration, µg/m3 | 17.2 ± 5.0 |
Indoor PM2.5 concentration, µg/m3 | 16.2 ± 8.4 |