Table 4 Results of linear mixed models to investigate associations between medium-term exposure to indoor and outdoor close-proximity air pollution and peak expiratory flow variation (n = 938)
From: Impact of close-proximity air pollution on lung function in schoolchildren in the French West Indies
Indoor | Outdoor | |||||||
|---|---|---|---|---|---|---|---|---|
O3(in μg/m3) | NO2(in μg/m3) | O3(in μg/m3) | NO2(in μg/m3) | |||||
β | (95% CI) | β | (95% CI) | β | (95% CI) | β | (95% CI) | |
Pollutant | 0.02 | (−0.05; 0.09) | 0.00 | (−0.16; 0.17) | 0.04 | (−0.02; 0.10) | 0.03 | (−0.18; 0.24) |
Sex (male vs girl) | −0.06 | (−1.35; 1.24) | −0.04 | (−1.33; 1.26) | −0.09 | (−1.38; 1.21) | −0.03 | (−1.33; 1.26) |
Age | −0.21 | (−1.11; 0.69) | −0.19 | (−1.08; 0.71) | −0.22 | (−1.11; 0.67) | −0.19 | (−1.08; 0.71) |
BMI | ||||||||
High vs Normal | 0.11 | (−1.46; 1.68) | 0.14 | (−1.43; 1.70) | 0.11 | (−1.45; 1.67) | 0.14 | (−1.43; 1.70) |
Low vs Normal | 0.43 | (−2.20; 3.07) | 0.40 | (−2.23; 3.04) | 0.48 | (−2.15; 3.11) | 0.39 | (−2.24; 3.02) |
Premature birth (Yes vs No) | 0.49 | (−0.99; 1.97) | 0.49 | (−0.99; 1.97) | 0.48 | (−1.00; 1.96) | 0.49 | (−0.99; 1.97) |
Rainy season (Yes vs No) | −0.24 | (−1.99; 1.51) | −0.23 | (−2.09; 1.62) | −0.42 | (−2.08; 1.24) | −0.29 | (−2.12; 1.53) |
Outside temperature (unit: °C) | 0.19 | (−0.23; 0.62) | 0.16 | (−0.25; 0.58) | 0.21 | (−0.20; 0.61) | 0.16 | (−0.25; 0.58) |
Relative humidity (unit: %) | −0.06 | (−0.12; 0.01) | −0.06 | (−0.12; 0.00) | −0.04 | (−0.11; 0.02) | −0.06 | (−0.12; 0.00) |
Atopy (Yes vs No) | 1.09 | (−0.38; 2.57) | 1.09 | (−0.38; 2.57) | 1.09 | (−0.38; 2.57) | 7.52 | (−0.39; 2.56) |
Variability of school random intercept: \( {\widehat{\upsigma}}_{\upgamma 0}^2 \) (P value) | 0.99 (0.10) | 1.16 (0.07) | 0.6 (0.22) | 1.13 (0.08) | ||||