Table 2.
Effect of increase in 10 μg/m3 ambient particulate matter on lung function level (ml) and lung function growth (ml/year) per year
| PM10 | PM2.5 | |||
|---|---|---|---|---|
|
| ||||
| Estimate (95% CI) | Estimate (95% CI) | |||
| FEV1 | −1.6 | (−2.1 to −1.1) | −2.7 | (−3.5 to −2.0) |
| FEV1 growth | −0.7 | (−1.0 to −0.4) | −1.4 | (−1.8 to −0.9) |
| FVC | −1.6 | (−2.2 to −1.2) | −3.5 | (−4.3 to −2.7) |
| FVC growth | −0.7 | (−1.0 to −0.4) | −1.5 | (−2.0 to −1.0) |
| FEV1/FVC | −0.001 | (−0.002 to −0.00) | −0.000 | (−0.000 to −0.002) |
| FEV1/FVC growth | −0.001 | (−0.001 to 0) | −0.001 | (−0.002 to −0.000) |
Controlling for baseline age, sex, height, weight, ventilation, coal use, mother’s education, father’s education, father’s smoking status and time trends. Also, accounting for clustering at district level, spirometry technician and correlation between individual subjects with repeated measures