Table 6 Sensitivity analyses including best predictor in each category, all summary measures.
Indicator Type | Traffic Indicator | Estimate(s), p-value(s) from multivariate model | Model R2 |
|---|---|---|---|
Base model | Â | Â | R2 = .31 |
Cumulative density scores: | Unweighted 500 m buffer (n = 54) | β1 = 5.39*10-4 (.49) β2 = 5.63*10-3 (.41) | R2 = .39 |
Summary measures: | Total roadway length within: | Â | Â |
|  | 50 meters *Still Winds (n = 54) | β1 = 3.94*10-4 (.18) β2 = 4.08*10-3 (.01) | R2 = .41 |
|  | 100 meters *Still Winds (n = 54) | β1 = 2.15*10-4 (.14) β2 = 1.27*10-3 (.03) | R2 = .47 |
|  | 200 meters *Still Winds (n = 54) | β1 = 1.10*10 -4 (.01) β2 = 4.38*10 -4 (.02) | R 2 = .52 |
|  | 300 meters *Still Winds (n = 54) | β1 = 2.99*10-5 (.11 β2 = 2.01*10-4 (.04) | R2 = .48 |
Distance-based measures: | To nearest highway (>19,000 cars/day) * Still Winds (n = 54) | β1 = 0.452 (.06) β2 = 0.549 (.04) | R2 = .45 |
Characteristics of Nearest major road: | Diesel fraction * Still Winds (n = 34) | β1 = -1.06 (.02) β2 = 34.6 (.02) | R 2 = .54 |
|  | Trucks per day * Still Winds (n = 34) | β1 = -7.41*10 -5 (.06) β2 = 3.51*10 -3 (.02) | R 2 = .54 |
|  | Trucks/Distance to major road * Still Winds (n = 34) | β1 = -6.31*10 -3 (.03) β2 = s0.119 (.05) | R 2 = .54 |