Table 2.

Regression interaction coefficients for number of emergency department visits and days hospitalized models by FEMA assistance level.

	None (n=153,339)	Individual (n=456,218)			Public (n=893,886)
Variable / year	Coef.a	Coef.a	Diff.b	P-valuec	Coef.a	Diff.b	P-valuec
ED visits
2003	0.018	0.020	0.002	0.48	0.020	0.002	0.45
2004	0.044	0.046	0.002	0.43	0.048	0.005	0.11
2006	0.118	0.117	−0.001	0.66	0.124	0.007	0.06
2007	0.163	0.159	−0.003	0.33	0.170	0.007	0.04
2008	0.229	0.243	0.014	< 0.001	0.246	0.017	< 0.001
Hospitalized days
2003	0.243	0.239	−0.004	0.89	0.227	−0.016	0.53
2004	0.614	0.533	−0.081	0.01	0.577	−0.037	0.22
2006	1.452	1.460	0.008	0.85	1.537	0.085	0.02
2007	2.022	2.066	0.044	0.32	2.160	0.138	< 0.001
2008	3.000	3.254	0.253	< 0.001	3.298	0.297	< 0.001

^aCoefficient

^bDifference between the coefficient of that group and the None coefficient

^cPvalue of the test of equivalence of the coefficient of that group and the None coefficient.