Table 3 Pulmonary function measures of the study subjects during and post-exposure in transport hub and park
Time points | FEV1 (L) | PEF (L/min) | ||||||
|---|---|---|---|---|---|---|---|---|
Transport hub | Park | Transport hub | Park | |||||
N | Mean ± SD | N | Mean ± SD | N | Mean ± SD | N | Mean ± SD | |
Pre-exposure | 40 | 3.16 ± 0.68 | 40 | 3.13 ± 0.64 | 40 | 451.03 ± 130.55 | 40 | 448.55 ± 120.49 |
During exposure 1 h | 40 | 3.05 ± 0.64 | 40 | 3.12 ± 0.64 | 40 | 430.68 ± 126.26 | 40 | 439.98 ± 120.82 |
During exposure 2 h | 40 | 3.02 ± 0.65 | 40 | 3.08 ± 0.65 | 40 | 427.15 ± 127.27 | 40 | 437.76 ± 122.20 |
Post-exposure 5 h | 39 | 3.10 ± 0.61 | 40 | 3.09 ± 0.62 | 39 | 438.78 ± 121.29 | 40 | 440.57 ± 120.33 |
Post-exposure 7 h | 38 | 3.09 ± 0.65 | 40 | 3.10 ± 0.64 | 38 | 443.68 ± 119.36 | 40 | 447.65 ± 125.15 |
Post-exposure 9 h | 38 | 3.12 ± 0.65 | 40 | 3.09 ± 0.67 | 38 | 437.39 ± 116.07 | 40 | 439.50 ± 120.93 |
Post-exposure 22 h | 38 | 3.09 ± 0.63 | 40 | 3.11 ± 0.68 | 38 | 436.42 ± 120.24 | 40 | 438.32 ± 124.40 |