| Ever diagnosed w/asthma (n = 963) | Current asthma (n = 963) | ||||||
---|---|---|---|---|---|---|---|---|
 | n | % | PR | 95% CI | n | % | PR | 95% CI |
Road miles/sq. mi | ||||||||
 Tertile 1 (0.19–1.89) | 49 | 16.2 | 1.0 | –- | 29 | 9.6 | 1.0 | –- |
 Tertile 2 (2.18–2.76) | 75 | 23.0 | 1.42 | 1.03–1.96 | 59 | 18.1 | 1.88 | 1.24–2.86 |
 Tertile 3 (2.96–6.00) | 94 | 28.1 | 1.73 | 1.27–2.35 | 69 | 20.6 | 2.14 | 1.43–3.22 |
Coal haul miles/sq. mi | ||||||||
  Zero | 66 | 21.9 | 1.0 | –- | 50 | 16.6 | 1.0 | –- |
  Below median (0.00–0.62) | 108 | 22.4 | 1.02 | 0.78–1.34 | 81 | 16.8 | 1.01 | 0.73–1.40 |
 Above median (0.72–1.27) | 44 | 24.4 | 1.11 | 0.80–1.56 | 26 | 14.4 | 0.87 | 0.56–1.35 |
Oil/gas wells/sq. mi | ||||||||
 Zero | 50 | 20.8 | 1.0 | –- | 32 | 13.3 | 1.0 | –- |
 Below median (0.34–3.51) | 132 | 22.5 | 1.09 | 0.81–1.45 | 96 | 16.7 | 1.26 | 0.87–1.82 |
 Above median (4.38–8.44) | 36 | 26.5 | 1.28 | 0.88–1.85 | 27 | 19.9 | 1.50 | 0.94–2.39 |
Abandoned mining, %HUC area | ||||||||
 Tertile 1 (0.00–8.04) | 65 | 21.2 | 1.0 | –- | 45 | 14.7 | 1.0 | –- |
 Tertile 2 (9.72–44.84) | 77 | 22.1 | 1.04 | 0.78–1.40 | 53 | 15.2 | 1.04 | 0.72–1.49 |
 Tertile 3 (46.40–196.45) | 76 | 24.6 | 1.16 | 0.87–1.55 | 59 | 19.1 | 1.30 | 0.91–1.85 |
Active mining, %HUC area | ||||||||
 Zero | 113 | 25.3 | 1.0 | –- | 84 | 18.8 | 1.0 | –- |
 Below median (0.00–8.02) | 70 | 23.0 | 0.91 | 0.70–1.18 | 50 | 16.4 | 0.87 | 0.63–1.20 |
 Above median (9.68–48.31) | 35 | 16.5 | 0.65 | 0.46–0.92 | 23 | 10.9 | 0.58 | 0.37–0.89 |