Table 2.

Unadjusted and multilevel models with random effects for relative risks and 95% CIs for association of ICE race measure and survival to discharge among Medicare beneficiaries

Variable	ICE race model 1 unadjusted		ICE race model 2 (beneficiary)		ICE race model 3 (beneficiary + hospital)
	RR	95% CI	RR	95% CI	RR	95% CI
ICE race Q1 (most segregated Black)	Ref	Ref	Ref	Ref	Ref	Ref
ICE race Q2	1.10	1.05–1.14	1.06	1.01–1.11	1.05	0.99–1.1
ICE race Q3	1.15	1.11–1.21	1.10	1.05–1.15	1.09	1.03–1.15
ICE race Q4	1.27	1.21–1.32	1.18	1.13–1.24	1.17	1.11–1.23
ICE race Q5 (most segregated White)	1.37	1.31–1.43	1.29	1.23–1.36	1.28	1.21–1.35
Sex: female	–	–	Ref	Ref	Ref	Ref
Sex: male	–	–	1.07	1.04–1.10	1.06	1.03–1.10
Individual White race	–	–	Ref	Ref	Ref	Ref
Individual Black race	–	–	0.89	0.85–0.93	0.90	0.86–0.94
Age category 65–74 y	–		Ref	Ref	Ref	Ref
Age category 75–84 y	–	–	0.90	0.88–0.93	0.90	0.88–0.93
Age category 85 + y	–	–	0.85	0.82–0.89	0.85	0.82–0.89
Elixhauser AHRQ Comorbidity Index < 0	–	–	Ref	Ref	Ref	Ref
Elixhauser AHRQ Index = 0	–	–	0.72	0.67–0.78	0.72	0.67–0.78
Elixhauser AHRQ Index = 1–4	–	–	0.80	0.75–0.86	0.79	0.74–0.86
Elixhauser AHRQ Index ≥ 5	–	–	0.62	0.60–0.65	0.63	0.60–0.66
Hospital size: no. of beds < 100	–	–	–	–	Ref	Ref
Hospital size: no. of beds > 100–399	–	–	–	–	0.89	0.82–0.96
Hospital size: no. of beds ≥ 400	–	–	–	–	0.87	0.79–0.94
Hospital teaching status: major academic teaching	–	–	–	–	Ref	Ref
Hospital teaching status: minor academic teaching	–	–	–	–	1.04	0.99–1.10
Hospital teaching status: non-teaching	–	–	–	–	1.11	1.04–1.17
Hospital medical intensive care unit beds (no)	–	–	–	–	Ref	Ref
Hospital medical intensive care unit beds (yes)	–	–	–	–	0.94	0.86–1.02
Hospital cardiac intensive care beds (CIC) (no)	–	–	–	–	Ref	Ref
Hospital cardiac intensive care beds (CIC) (yes/no)	–	–	–	–	0.99	0.95–1.03
Hospital cardiac catheterization availability (no)	–	–	–	–	Ref	Ref
Hospital cardiac catheterization availability (yes)	–	–	–	–	1.13	1.07–1.20

Ref = Reference Category