Stratified by PM2.5 | 1st quartile | 2nd quartile | 3rd quartile | 4th quartile | ||||
% difference | P | % difference | P | % difference | P | % difference | P | |
FVC | ||||||||
 Low PA | 0.14 (− 0.08, 0.35) | 0.209 | 0.09 (− 0.09, 0.26) | 0.326 | 0.17 (0.01, 0.33) | 0.036 | − 0.20 (− 0.35, − 0.05) | 0.009 |
 Moderate PA | 0.49 (0.26, 0.72) | < 0.001 | 0.43 (0.23, 0.62) | < 0.001 | 0.45 (0.27, 0.63) | < 0.001 | 0.14 (− 0.02, 0.31) | 0.088 |
 High PA | 0.82 (0.57, 1.07) | < 0.001 | 1.23 (1.01, 1.46) | < 0.001 | 0.87 (0.65, 1.09) | < 0.001 | 0.57 (0.37, 0.76) | < 0.001 |
 Per 10 MET-h | 0.14 (0.08, 0.19) | < 0.001 | 0.23 (0.17, 0.28) | < 0.001 | 0.20 (0.15, 0.25) | < 0.001 | 0.20 (0.15, 0.24) | < 0.001 |
FEV1 | ||||||||
 Low PA | 0.03 (− 0.16, 0.22) | 0.766 | 0.23 (0.06, 0.40) | 0.010 | −0.14 (− 0.29, 0.02) | 0.078 | − 0.06 (− 0.22, 0.09) | 0.416 |
 Moderate PA | 0.43 (0.22, 0.63) | < 0.001 | 0.33 (0.14, 0.52) | 0.001 | 0.13 (−0.04, 0.31) | 0.136 | 0.44 (0.27, 0.60) | < 0.001 |
 High PA | 0.93 (0.70, 1.16) | < 0.001 | 1.13 (0.90, 1.35) | < 0.001 | 0.51 (0.30, 0.72) | < 0.001 | 1.10 (0.90, 1.30) | < 0.001 |
 Per 10 MET-h | 0.22 (0.17, 0.27) | < 0.001 | 0.18 (0.13, 0.23) | < 0.001 | 0.14 (0.09, 0.19) | < 0.001 | 0.20 (0.19, 0.22) | < 0.001 |
MMEF | ||||||||
 Low PA | − 0.49 (− 0.78, − 0.2) | 0.001 | 0.26 (− 0.01, 0.54) | 0.061 | 0.13 (−0.13, 0.39) | 0.320 | −0.07 (− 0.33, 0.19) | 0.581 |
 Moderate PA | 0.20 (− 0.11, 0.52) | 0.202 | 0.08 (− 0.22, 0.39) | 0.594 | 0.29 (0.00, 0.58) | 0.048 | 0.21 (−0.07, 0.50) | 0.140 |
 High PA | 1.04 (0.70, 1.40) | < 0.001 | 1.00 (0.65, 1.36) | < 0.001 | 0.33 (−0.01, 0.68) | 0.060 | 0.76 (0.43, 1.09) | < 0.001 |
 Per 10 MET-h | 0.31 (0.23, 0.39) | < 0.001 | 0.22 (0.14, 0.30) | < 0.001 | 0.10 (0.01, 0.18) | 0.021 | 0.13 (0.05, 0.20) | 0.001 |
Stratified by PA | Inactive PA | Low PA | Moderate PA | High PA | ||||
% difference | P | % difference | P | % difference | P | % difference | P | |
FVC | ||||||||
 2nd quartile | − 1.59 (− 1.73, − 1.45) | < 0.001 | − 0.86 (− 1.06, − 0.65) | < 0.001 | − 1.28 (− 1.50, − 1.06) | < 0.001 | − 1.13 (− 1.16, − 1.11) | < 0.001 |
 3rd quartile | − 2.32 (− 2.48, − 2.15) | < 0.001 | − 1.20 (− 1.44, − 0.96) | < 0.001 | − 1.84 (− 2.10, − 1.58) | < 0.001 | − 2.62 (− 2.64, − 2.60) | < 0.001 |
 4th quartile | − 4.96 (− 5.17, − 4.75) | < 0.001 | − 4.14 (− 4.44, − 3.84) | < 0.001 | − 4.40 (− 4.72, − 4.07) | < 0.001 | − 4.55 (− 4.57, − 4.52) | < 0.001 |
 Per 10 μg/m3 | − 2.20 (− 2.31, − 2.09) | < 0.001 | − 1.97 (− 2.12, − 1.82) | < 0.001 | −2.48 (− 2.50, − 2.47) | < 0.001 | − 3.07 (− 3.26, − 2.87) | < 0.001 |
FEV1 | ||||||||
 2nd quartile | − 1.81 (− 1.96, − 1.67) | < 0.001 | − 1.16 (− 1.36, − 0.95) | < 0.001 | − 1.82 (− 2.04, − 1.59) | < 0.001 | − 2.52 (− 2.77, − 2.27) | < 0.001 |
 3rd quartile | − 2.63 (− 2.80, − 2.46) | < 0.001 | − 1.90 (− 2.14, − 1.67) | < 0.001 | −2.75 (− 3.01, − 2.49) | < 0.001 | − 3.78 (− 4.08, − 3.48) | < 0.001 |
 4th quartile | − 5.05 (− 5.27, − 4.83) | < 0.001 | − 4.60 (− 4.91, − 4.29) | < 0.001 | − 5.38 (− 5.71, − 5.05) | < 0.001 | − 6.18 (− 6.57, − 5.80) | < 0.001 |
 Per 10 μg/m3 | − 2.68 (− 2.80, − 2.57) | < 0.001 | − 2.31 (− 2.47, − 2.16) | < 0.001 | −2.87 (− 3.04, − 2.70) | < 0.001 | − 3.36 (− 3.57, − 3.16) | < 0.001 |
MMEF | ||||||||
 2nd quartile | − 3.16 (− 3.38, − 2.94) | < 0.001 | − 2.13 (− 2.45, − 1.80) | < 0.001 | − 2.88 (− 3.23, − 2.54) | < 0.001 | − 3.92 (− 4.31, − 3.54) | < 0.001 |
 3rd quartile | − 4.65 (− 4.90, − 4.40) | < 0.001 | − 3.45 (− 3.82, − 3.08) | < 0.001 | − 5.02 (− 5.42, − 4.62) | < 0.001 | − 6.24 (− 6.69, − 5.78) | < 0.001 |
 4th quartile | − 6.34 (− 6.65, − 6.02) | < 0.001 | − 4.68 (− 5.14, − 4.22) | < 0.001 | − 6.41 (− 6.90, − 5.91) | < 0.001 | − 7.91 (− 8.46, − 7.35) | < 0.001 |
 Per 10 μg/m3 | − 3.30 (− 3.46, − 3.13) | < 0.001 | − 2.56 (− 2.79, − 2.33) | < 0.001 | − 3.03 (− 3.28, − 2.78) | < 0.001 | − 3.81 (− 4.11, − 3.51) | < 0.001 |