Development and performance evaluation of a GIS-based metric to assess exposure to airborne pollutant emissions from industrial sources

Table 4 Weighted kappa coefficients (wκ), corresponding 95% confidence intervals (95% CI) and R² obtained with the final metric for Lyon, Le Havre and Le Bugey for 1996, 2002 and 2008

Years	Areas	Lyon	Le Bugey	Le Havre
Calibration
1996	wκ (95% CI)	0.71 (0.67, 0.76)	0.79 (0.73, 0.85)	0.74 (0.68, 0.80)
1996	R²	0.78	0.83	0.68
2002	wκ (95% CI)	0.84 (0.79, 0.88)	0.82 (0.76, 0.87)	0.77 (0.72, 0.83)
2002	R²	0.83	0.90	0.69
2008	wκ (95% CI)	0.81 (0.72, 0.89)	0.73 (0.66, 0.79)	0.78 (0.72, 0.84)
2008	R²	0.87	0.77	0.84
Performance evaluation 1: new virtual subjects randomly distributed^a
1996	wκ (95% CI)	0.71 (0.64, 0.78)	0.86 (0.81, 0.90)	0.71 (0.64, 0.78)
1996	R²	0.95	0.86	0.30
2002	wκ (95% CI)	0.67 (0.60, 0.74)	0.86 (0.81, 0.91)	0.74 (0.68, 0.80)
2002	R²	0.94	0.55	0.80
2008	wκ (95% CI)	0.58 (0.49, 0.66)	0.84 (0.79, 0.89)	0.79 (0.73, 0.84)
2008	R²	0.88	0.75	0.62
Performance evaluation 2: cadmium emissions
1996	wκ (95% CI)	0.69 (0.64, 0.73)	0.83 (0.78, 0.87)	0.72 (0.67, 0.78)
1996	R²	0.74	0.71	0.65
2002	wκ (95% CI)	0.86 (0.82, 0.91)	0.82 (0.77, 0.87)	0.77 (0.71, 0.82)
2002	R²	0.83	0.86	0.66
2008	wκ (95% CI)	0.73 (0.64, 0.83)	0.69 (0.63, 0.76)	0.74 (0.68, 0.80)
2008	R²	0.82	0.83	0.80

ISSN: 1476-069X