Table 3.

Correlation matrix of dependent and independent variables.

Bivariate Association	Rate (All)	Rate (0–14)	Rate (14–64)	Rate (65+)	NHI Prem.	PCP	Beds (<300)	Beds (≥300)	CO	SO2
NHI prem.	−0.290 **	−0.150 *	−0.371 **	−0.363 **
PCP	−0.220 **	−0.110	−0.245 **	−0.333 **	0.498 **
Beds (<300)	0.428 **	0.316 **	0.453 **	0.334 **	−0.160 *	0.212 **
Beds (≥300)	−0.055	−0.001	−0.064	−0.138 *	0.219 **	0.545 **	0.208 **
CO	−0.191 **	−0.117	−0.223 **	−0.236 **	0.314 **	0.194 **	−0.077	0.037
SO2	−0.005	0.058	−0.071	−0.086	0.391 **	0.311 **	0.050	0.179 **	0.436 *
PM10	−0.039	−0.033	−0.040	−0.026	0.035	0.038	−0.115	−0.056	0.183 *	0.286 *

* p < 0.05, ** p < 0.01.