TABLE 3.

Summary of two series of models on the interactive effects of race and continuity of care (overall) on ER visits, hospitalizations, cost, all‐cause mortality and cancer‐specific mortality, weighted by propensity score—advanced‐stage prostate cancer.

	Model 1: Main effects	Model 2: Model 1 plus interaction
ER visit	IRR (95% CI)	IRR (95% CI)
Race (African American)	1.16 (1.13, 1.18)	1.18 (1.15, 1.22)
COCI score	0.65 (0.64, 0.67)	0.64 (0.63, 0.67)
COCI × African American		0.94 (0.89, 0.98)

Hospitalization	IRR (95% CI)	IRR (95% CI)
Race (African American)	1.12 (1.10, 1.13)	1.16 (1.14, 1.19)
COCI score	0.65 (0.64, 0.67)	0.63 (0.62, 0.64)
COCI × African American		0.89 (0.85, 0.93)

Direct medical care cost	e β (95% CI)	e β (95% CI)
Race (African American)	1.04 (0.99, 1.08)	1.14 (1.06, 1.21)
COCI score	0.64 (0.61, 0.66)	0.59 (0.56, 0.63)
COCI × African American		0.81 (0.73, 0.91)

All‐cause mortality	HR (95% CI)	HR (95% CI)
Race (African American)	1.30 (1.26, 1.34)	1.64 (1.56, 1.73)
COCI score	0.73 (0.70, 0.75)	0.79 (0.75, 0.82)
COCI × African American		0.46 (0.42, 0.51)

Prostate cancer‐specific mortality	HR (95% CI)	HR (95% CI)
Race (African American)	1.39 (1.32, 1.46)	1.88 (1.74, 2.04)
COCI score	0.78 (0.73, 0.82)	0.88 (0.83, 0.93)
COCI × African American		0.43 (0.37, 0.49)

Note: All models were also adjusted for age, marital status, Charlson comorbidity score, grade, and treatment.

Abbreviations: CI, confidence interval; COCI, Continuity of Care Index; e ^β , exponent of beta estimate; ER, emergency room; HR, hazard ratio; IRR, incidence rate ratio.