Table 5 Effect of proximity and modelled NO2 on cross-sectional FEV1 and longitudinal change in FEV1
Mean (unadjusted) | SD | β* | 95% CI | p-value† | |
|---|---|---|---|---|---|
Cross-sectional | |||||
Distance(N = 2599) | |||||
≤150 m | 3202.6 | 898.7 | 5.73 | -42.80 to 54.27 | 0.82 |
>150 m | 3178.5 | 924.1 | 0 | ||
Bands of distance (N = 580) | |||||
<50 m | 3143.4 | 925.2 | 38.30 | -63.60 to 140.21 | 0.47 |
50 – 100 m | 3230.8 | 886.0 | -10.65 | -104.77 to 83.48 | |
100 – 150 m | 3220.1 | 892.9 | 0 | ||
Quintile of NO 2 (N = 2599) | |||||
<33.92 | 3218.0 | 905.5 | 0 | 0.35 | |
33.92 – 34.23 | 3163.6 | 940.1 | -20.20 | -85.00 to 44.59 | |
34.23 – 34.73 | 3147.0 | 927.5 | -4.72 | -69.41 to 59.96 | |
34.73 – 36.79 | 3213.5 | 937.9 | 9.79 | -54.69 to 74.27 | |
>36.79 | 3177.2 | 880.9 | 18.12 | -45.01 to 81.25 | |
Longitudinal ‡ | Mean change (unadjusted) | SD | β** | 95% CI | p-value † |
Distance(N = 1329) | |||||
≤150 m | -30.6 | 340.0 | 10.03 | -33.98 to 54.04 | 0.65 |
>150 m | -36.5 | 334.0 | 0 | ||
Bands of distance (N = 295) | |||||
<50 m | -13.8 | 334.0 | 46.08 | -53.31 to 145.46 | 0.35 |
50 – 100 m | -19.2 | 361.6 | 47.25 | -47.43 to 141.93 | |
100 – 150 m | -59.1 | 320.7 | 0 | ||
Quintiles of NO 2 (N = 1329) | |||||
<33.92 | -15.3 | 333.9 | 0 | 0.59 | |
33.92 – 34.23 | -24.5 | 334.3 | -18.87 | -76.85 to 39.11 | |
34.23 – 34.73 | -41.8 | 329.1 | -27.62 | -85.68 to 30.45 | |
34.73 – 36.79 | -57.6 | 327.1 | -37.52 | -96.16 to 21.12 | |
>36.79 | -39.0 | 352.4 | -21.58 | -79.24 to 36.08 |