Statistical air quality predictions for public health surveillance: evaluation and generation of county level metrics of PM2.5for the environmental public health tracking network

Table 1 Correlation between county level HB estimates of PM_2.5and AQS-based PM_2.5concentrations

Geo-imputation approach	Grid resolution	Correlation coefficient
		Pearson(r)	Kendall Tau-B(τ)
Population-weighted county centroid containment	36-km	0.94	0.83
Population-weighted county centroid containment	12-km	0.86	0.69
Grid cell centroid containment	36-km	0.92	0.78
Grid cell centroid containment	12-km	0.84	0.67
Geometric intersection	36-km	0.91	0.76
	12-km	0.84	0.66

ISSN: 1476-072X