Appendix Table 2.

Hospital Ranking Agreements for Older Patients and Younger Patients with Acute Myocardial Infarction (Sensitivity Analysis)

	Hospital 30-Day RSMRs* for Older Patients ≥65 Years-Old
Hospital 30-Day RSMRs* for Younger Patients <65 Years-Old	Top 20% (n=153)	Middle 60% (n=458)	Bottom 20% (n=148)
Top 20% (n=153)	61	82	10
Middle 60% (n=453)	86	302	65
Bottom 20% (n=153)	6	74	73
Hospital 30-Day RSMRs* for Younger Patients <65 Years-Old	Top 10% (n=77)	Middle 80% (n=609)	Bottom 10% (n=73)
Top 10% (n=77)	20	55	2
Middle 80% (n=604)	56	497	51
Bottom 10% (n=78)	1	57	20
Hospital 30-Day RSMRs* for Younger Patients <65 Years-Old	Better-Than-Expected (n=58)	No Different-Than-Expected (n=606)	Worse-Than-Expected (n=95)
Better-Than-Expected (n=20)	7	13	0
No Different-Than-Expected (n=701)	51	568	82
Worse-Than-Expected (n=38)	0	25	13

Each cell in table indicates number of hospitals (total N=759 hospitals, 227 hospitals omitted due to <50 AMI hospitalizations among older adults or younger adults). Shaded cells correspond to movements in hospital mortality rankings for older patients compared with younger patients. We used the CMS electronic measure methodology with additional predictor variables for ST-segment elevation on the electrocardiogram at presentation, cardiogenic shock at presentation, acute heart failure at presentation, and cardiac arrest at presentation when calculating hospital 30-day RSMRs for older patients and younger patients with AMI. We ranked hospitals by their 30-day RSMRs for older patients and younger patients with AMI and plotted agreement in these rankings.

^*RSMR: risk-standardized mortality rate.