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. Author manuscript; available in PMC: 2017 Mar 20.
Published in final edited form as: JACC Cardiovasc Interv. 2014 Dec 10;8(1 Pt A):10–16. doi: 10.1016/j.jcin.2014.07.025

TABLE 4.

Observed Versus Expected Mortality and RAM by Predicted Mortality Quintile

Sites, N Observed
Mortality		 Expected
Mortality		 O/E Ratio
(95% CI)		 RAM (95% CI)
Overall 1,168 1.37% 1.37% 1.00 (0.98–1.02) 1.37% (1.34–1.40)
Top 20% 233 2.21% 2.43% 0.91 (0.87–0.96) 1.25% (1.20–1.31)
Top 20%–40% 234 1.63% 1.69% 0.96 (0.92–1.00) 1.32% (1.27–1.38)
Middle 20% 234 1.39% 1.36% 1.02 (0.98–1.07) 1.41% (1.34–1.47)
Bottom 20%–40% 234 1.16% 1.08% 1.07 (1.02–1.12) 1.47% (1.40–1.54)
Bottom 20% 233 0.81% 0.74% 1.10 (1.03–1.17) 1.51% (1.42–1.60)

CI = confidence interval; O/E ratio = observed versus expected mortality ratio; RAM = risk-adjusted mortality.