Table 4. Adjusted inpatient mortality among patients admitted with AMI in May and July, according to teaching hospital status.

	Adjusted mortality among low risk patients				Adjusted mortality among high risk patients
Teaching hospital status	May	July	Odds ratio (95% CI)	p-value of OR compared to Non-teaching	May	July	Odds ratio (95t% CI)	p-value of OR compared to Non-teaching
Non-teaching	3.0%	3.1%	1.06 (0.92 - 1.23)	-	23.4%	23.5%	1.01 (0.91 - 1.11)	-
Very minor or minor	2.3%	2.6%	1.15 (0.85 - 1.45)	0.60	21.8%	23.3%	1.10 (0.92 - 1.28)	0.35
Major	2.1%	2.1%	1.00 (0.70 - 1.31)	0.73	20.0%	18.5%	0.90 (0.69 - 1.11)	0.40
Very major	2.1%	1.9%	0.90 (0.66 - 1.15)	0.29	18.8%	22.7%	1.30 (1.06 - 1.55)	0.02

Notes: Odds ratio reflects comparison of mortality in July relative to May in each hospital type. Very minor or minor teaching hospitals were defined as those with up to 0.25 residents per bed; major > 0.25 – 0.60 residents per bed; very major > 0.6 residents per bed. P-value reflects comparison of July-May mortality odds ratio for patients hospitalized in a given hospital type, relative to odds ratio for patients hospitalized in non-teaching hospitals. For example, among high risk patients, the p-value comparing the July-May mortality odds ratio in very major teaching hospitals to the odds ratio in non-teaching hospitals is 0.02.