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Table 2 DOF-based versus census-based breast cancer incidence rates among non-Hispanic white women (1999–2001)

From: Impact of intercensal population projections and error of closure on breast cancer surveillance: examples from 10 California counties

County Average cases per year DOF-based incidence rate (95% CI)a Census-based incidence rate (95% CI)a Standardized rate ratio
Alameda 575 143.3 (136.6–150.4) 151.8 (144.6–159.2) 0.94
Contra Costa 592 158.0 (150.7–165.7) 164.9 (157.2–172.9) 0.96
Marin 245 213.6 (198.4–229.9) 175.8 (163.2–189.5) 1.22b
San Francisco 296 140.3 (131.0–150.7) 159.8 (149.2–171.0) 0.88
San Mateo 406 152.3 (143.7–161.4) 163.4 (154.2–173.2) 0.93
Monterey 172 152.7 (139.7–166.9) 150.7 (137.7–164.8) 1.01
San Benito 19 114.0 (85.9–149.0) 138.7 (104.6–182.0) 0.82
Santa Clara 743 143.4 (137.5–149.5) 158.6 (152.0–165.4) 0.90
Santa Cruz 161 148.2 (135.1–162.4) 157.8 (143.8–173.0) 0.94b
Los Angeles 3587 153.8 (150.7–156.9) 161.0 (157.8–164.3) 0.96b
  1. aIncidence rates are expressed per 100,000 women based on year 2000 population denominators. Data are adjusted to the 2000 US standard. bp < 0.05. DOF, Department of Finance.