Table 3. Impact of Medical Emergency Team on Risk-Adjusted Hospital Mortality.

Mortality trends before and after implementation of a medical emergency team in study hospitals are compared. A significantly lower intercept or a more negative slope (lower odds ratio) after implementation would indicate that medical emergency teams reduced hospital mortality. Results are presented for the entire cohort and by hospital subgroups.

	Mortality Trend Before MET Intervention	Mortality Trend After MET Intervention	P
Entire Cohort
Intercept (deaths per 1000 admits)*	8.4 (7.8, 9.0)	8.8 (8.3, 9.3)	0.11
Slope (Odds Ratios per year)	0.94 (0.92, 0.96)	0.94 (0.93, 0.95)	0.98
INTERACTION ANALYSES
By Bed Size			0.69†
Intercept (deaths per 1000 admits)*
< 250 Hospital beds	7.6 (6.4, 9.0)	8.1 (7.2, 9.1)
≥ 250 Hospital beds	8.6 (8.0, 9.3)	9.0 (8.4, 9.6)
Slope (Odds Ratios per year)
< 250 Hospital beds	0.91 (0.86, 0.97)	0.96 (0.93, 0.98)
≥ 250 Hospital beds	0.94 (0.92, 0.97)	0.94 (0.93, 0.95)
By U.S. Census Region			0.85†
Intercept (deaths per 1000 admits)*
Northeast	7.3 (5.3, 10.2)	8.1 (6.7, 9.9)
Midwest	8.4 (7.3, 9.6)	8.6 (7.8, 9.6)
South	8.6 (7.8, 9.6)	9.4 (8.4, 10.4)
West	8.8 (7.8, 9.9)	8.6 (7.8, 9.5)
Slope (Odds Ratios per year)
Northeast	0.96 (0.85, 1.07)	0.95 (0.93, 0.97)
Midwest	0.94 (0.89, 0.99)	0.94 (0.93, 0.96)
South	0.94 (0.91, 0.97)	0.94 (0.91, 0.96)
West	0.96 (0.92, 0.99)	0.93 (0.91, 0.95)

^*Deaths per 1000 admissions at time of MET implementation

^†Overall p-value for interaction between hospital characteristic and MET implementation