Table 5.

Multiple regression models of survival to discharge and length of stay

Variables	1993		2003		2012
Survival to discharge	Odds ratio	p-value	Odds ratio	p-value	Odds ratio	p-value
Age	1.00	0.982	1.00	0.011	1.00	0.022
Teaching hospital	0.97	0.878	0.75	0.197	0.76	0.287
Elective admission	−2.50	0.004	−3.60	<0.001	−3.10	<0.001
Length of stay	Beta	p-value	Beta	p-value	Beta	p-value
Age	−0.06	0.012	−0.08	0.023	−0.12	0.003
Teaching hospital	0.65	0.614	1.96	0.016	2.09	0.002
Elective admission	−5.60	<0.0001	−5.34	<0.0001	−6.15	<0.0001