Table 3.

Regression interaction coefficients for hospitalized days (all, acute inpatient, other inpatient, skilled nursing facility) by FEMA assistance level.

Hospital type / year	None (n=153,339)	Individual (n=456,218)			Public (n=893,886)
	Coef.a	Coef.a	Diff.b	P-valuec	Coef.a	Diff.b	P-valuec
All
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
Acute inpatient
2003	0.081	0.069	−0.012	0.33	0.056	−0.025	0.04
2004	0.182	0.143	−0.039	0.005	0.138	−0.044	0.001
2006	0.354	0.340	−0.015	0.30	0.322	−0.033	0.01
2007	0.512	0.466	−0.046	0.003	0.436	−0.077	< 0.001
2008	0.773	0.734	−0.038	0.02	0.693	−0.080	< 0.001
Other inpatient
2003	0.009	0.052	0.043	< 0.001	0.028	0.019	0.03
2004	0.051	0.110	0.029	< 0.001	0.086	0.035	< 0.001
2006	0.095	0.181	0.086	< 0.001	0.126	0.031	0.002
2007	0.117	0.242	0.125	< 0.001	0.161	0.044	< 0.001
2008	0.204	0.356	0.153	< 0.001	0.257	0.054	< 0.001
Skilled nursing facility
2003	0.153	0.118	−0.034	0.06	0.143	−0.010	0.57
2004	0.382	0.281	−0.101	< 0.001	0.353	−0.029	0.16
2006	1.002	0.939	−0.063	0.03	1.089	0.087	0.001
2007	1.393	1.358	−0.036	0.27	1.564	0.171	< 0.001
2008	2.025	2.163	0.139	< 0.001	2.347	0.323	< 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.