Table 2.

Percentages of late-stage prostate cancer cases diagnosed over the period 1981–2007 for five categories of median household income, two race groups (white and black males), and two age categories ([40–64], [65,120]). The lower and upper limits of the 95% confidence intervals were computed using the Gaussian approximation for binomial distributions and are reported in italic.

	Categories of median household income
Age group	[0,$28,784]	[$28,784,$34,760]	[$34,760,$41,200]	[$41,200,$51,838]	[$51,838,$200,000]
White
40–64	21.15	18.88	19.11	17.00	15.74
	20.1–22.2	18.1–19.7	18.4–19.9	16.3–17.7	15.1–16.3
65–120	19.25	17.57	17.67	16.34	14.31
	18.8–19.7	17.2–17.9	17.3–18.0	16.0–16.7	13.9–14.7
Black
40–64	25.37	20.41	19.64	16.98	13.77
	24.0–26.8	18.7–22.2	17.7–21.6	15.1–18.9	11.6–15.9
65–120	27.34	22.44	21.58	20.54	17.79
	26.3–28.3	20.9–24.0	19.9–23.3	18.7–22.4	15.4–20.1