TABLE 4.
Summary of two series of models on the interactive effects of race and continuity of care (oncology) 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) | 1.09 (1.05, 1.12) | 1.23 (1.15, 1.31) |
| COCI score | 0.69 (0.66, 0.71) | 0.64 (0.62, 0.67) |
| COCI × African American | 0.84 (0.77, 0.91) |
| Hospitalization | IRR (95% CI) | IRR (95% CI) |
|---|---|---|
| Race (African American) | 1.02 (1.00, 1.04) | 1.13 (1.08, 1.19) |
| COCI score | 0.89 (0.87, 0.90) | 0.84 (0.82, 0.87) |
| COCI × African American | 0.86 (0.82, 0.92) |
| Direct medical care cost | e β (95% CI) | e β (95% CI) |
|---|---|---|
| Race (African American) | 0.97 (0.93, 1.02) | 1.16 (1.03, 1.31) |
| COCI score | 0.65 (0.62, 0.69) | 0.59 (0.56, 0.64) |
| COCI × African American | 0.79 (0.68, 0.92) |
| All‐cause mortality | HR (95% CI) | HR (95% CI) |
|---|---|---|
| Race (African American) | 1.25 (1.19, 1.30) | 1.77 (1.58, 1.96) |
| COCI score | 0.72 (0.69, 0.76) | 0.77 (0.73, 0.81) |
| COCI × African American | 0.49 (0.44, 0.56) |
| Prostate cancer‐specific | HR (95% CI) | HR (95% CI) |
|---|---|---|
| Race (African American) | 1.45 (1.36, 1.55) | 1.28 (1.09, 1.51) |
| COCI score | 0.61 (0.57, 0.66) | 0.59 (0.55, 0.64) |
| COCI × African American | 0.71 (0.59, 0.85) |
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.