TABLE 3—

Relative Risk (RR) of Death, by Cause^a Among Men Diagnosed with Prostate Cancer, Chicago Area, 1986–1990

	Prostate Cancer (n = 215)		Other Causes (n = 292)		Any Cause (n = 507)
Characteristic	RR (95% CI)	P	RR (95% CI)	P	RR (95% CI)	P
Race (Black vs White)	1.84 (1.22, 2.79)	.004	1.69 (1.17, 2.43)	.005	1.75 (1.33, 2.29	< .001
Age (in 5-year increments)	1.01 (0.92, 1.11)	.831	1.24 (1.14, 1.35)	< .001	1.14 (1.07, 1.21	< .001
Differentiation (vs well)
Moderate	2.26 (1.36, 3.78)	.002	1.09 (0.80, 1.49)	.573	1.35 (1.04, 1.74	.024
Poor	3.91 (2.40, 6.39)	< .001	1.24 (0.90, 1.71)	.181	1.83 (1.42, 2.35	< .001
Stage (localized/regional vs distant)	0.19 (0.11, 0.31)	< .001	0.55 (0.35, 0.85)	.008	0.31 (0.23, 0.42	< .001
Treatment
Surgery	0.43 (0.24, 0.75)	.003	0.62 (0.42, 0.92)	.016	0.58 (0.42, 0.78	.001
Radiation	1.57 (1.07, 2.30)	.020	0.95 (0.67, 1.35)	.795	1.17 (0.90, 1.51	.233
Diethylstilbestrol	1.79 (1.04, 3.09)	.035	1.11 (0.58, 2.15)	.750	1.47 (0.97, 2.22	.070
Castrationb	1.47 (0.97, 2.23)	.072	0.84 (0.55, 1.29)	.425	1.13 (0.84, 1.51	.422
Observation	0.56 (0.22, 1.43)	.225	1.62 (1.02, 2.54)	.041	1.37 (0.93, 2.01	.111
Charlson scorec	1.04 (0.92, 1.18)	.506	1.26 (1.14, 1.39)	< .001	1.13 (1.05, 1.22	.001

Note. CI = confidence interval.

^aBased on Cox proportional hazard model adjusted for baseline hazard rate for each hospital.

^bOrchiectomy or leuprolide, or flutamide.

^cScore range: 0 to 14.