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Table 4 Variations in respiratory function per unit increase of air pollutant concentrations in the three panels

From: Air pollution and lung function among susceptible adult subjects: a panel study

    PM2.5 PM10–2.5 PM10 NO2 CO O3
Pollutant increase    10 μg/m3 10 μg/m3 10 μg/m3 10 μg/m3 1 mg/m3 10 μg/m3
Panel Outcome Time β * SE (β) p β SE (β) p β SE (β) p β SE (β) p β SE (β) p β SE (β) p
COPD   24 h -0.80 0.36 0.027 -1.32 1.06 0.210 -0.66 0.30 0.027 -0.72 0.49 0.139 -0.14 0.15 0.353 0.01 0.57 0.983
  FVC (%) 48 h -0.89 0.41 0.031 -1.46 1.31 0.265 -0.75 0.35 0.032 -0.43 0.58 0.463 -0.13 0.18 0.497 0.18 0.65 0.783
   72 h § -1.10 0.55 0.044 -1.38 1.53 0.367 -0.94 0.47 0.045 -0.10 0.70 0.886 0.15 0.23 0.508 -0.03 0.86 0.977
   24 h -0.47 0.33 0.149 -0.59 0.95 0.532 -0.37 0.27 0.167 -1.16 0.41 0.005 -0.05 0.13 0.725 -0.20 0.50 0.687
  FEV 1 (%) 48 h -0.69 0.37 0.061 -1.01 1.19 0.396 -0.58 0.31 0.067 -1.38 0.49 0.005 -0.12 0.16 0.467 0.31 0.56 0.578
   72 h § -1.06 0.50 0.032 -0.90 1.42 0.524 -0.87 0.43 0.040 -0.94 0.60 0.117 -0.03 0.20 0.900 0.68 0.74 0.363
Asthma   24 h -0.14 0.29 0.617 -0.17 0.75 0.822 -0.12 0.24 0.621 -0.53 0.31 0.081 0.02 0.12 0.842 -0.33 0.41 0.416
  FVC (%) 48 h -0.07 0.33 0.825 -0.36 0.91 0.695 -0.09 0.29 0.750 -0.59 0.32 0.065 -0.001 0.13 0.995 0.02 0.42 0.957
   72 h § -0.06 0.39 0.886 -0.24 1.07 0.824 -0.08 0.36 0.836 -0.54 0.37 0.149 -0.06 0.16 0.700 0.14 0.50 0.782
   24 h -0.30 0.34 0.372 -0.67 0.89 0.448 -0.28 0.28 0.317 -1.10 0.35 0.002 -0.05 0.14 0.704 -0.41 0.50 0.421
  FEV 1 (%) 48 h -0.36 0.39 0.347 -1.19 1.07 0.265 -0.40 0.34 0.239 -1.28 0.37 0.001 -0.16 0.15 0.292 -0.01 0.51 0.983
   72 h § -0.40 0.46 0.384 -0.51 1.26 0.689 -0.40 0.43 0.351 -1.17 0.44 0.007 -0.28 0.18 0.126 0.46 0.60 0.449
IHD   24 h 0.37 0.26 0.164 0.37 0.73 0.617 0.28 0.22 0.198 0.15 0.29 0.612 0.176 0.101 0.081 0.58 0.33 0.077
  FVC (%) 48 h 0.51 0.29 0.082 -0.25 0.88 0.779 0.35 0.25 0.160 -0.06 0.37 0.868 0.132 0.120 0.271 0.36 0.42 0.392
   72 h § 0.73 0.40 0.069 0.67 1.04 0.519 0.59 0.34 0.079 0.36 0.47 0.440 0.132 0.165 0.425 0.08 0.60 0.898
   24 h 0.43 0.33 0.192 0.25 0.86 0.770 0.32 0.27 0.240 -0.24 0.36 0.513 0.204 0.120 0.088 0.57 0.39 0.144
  FEV 1 (%) 48 h 0.55 0.34 0.106 -0.23 1.02 0.818 0.38 0.29 0.193 0.00 0.44 0.994 0.114 0.142 0.420 0.53 0.50 0.288
   72 h § 0.66 0.47 0.157 0.18 1.19 0.877 0.49 0.39 0.214 0.21 0.56 0.710 0.159 0.194 0.412 0.65 0.70 0.354
  1. *Regression coefficient from GEE models for panel data controlling for repeated individual observations, temperature, relative humidity, and day of the week (COPD and IHD panels) or β-2 stimulant inhalation (asthma panel), representing the change in lung function index (% of predicted) per unit increase of pollutant concentration.
  2. Concentration during the previous 24 hours.
  3. Average concentration over the previous 48 hours.
  4. §Average concentration over the previous 72 h.
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