Table 1.

Age-adjusted (2000 U.S.) incidence rates*and rate ratios of colorectal cancer by race and anatomic subsite, selected areas in the United States,1995 to 1999, males

Anatomic SubsiteAge-Adjusted Rates
Rate Ratios (95% Confidence Intervals)
APIWhitesBlacksAPI/WhitesAPI/Blacks
Colon and rectum54.267.272.20.81 (0.79-0.83)§0.75 (0.73-0.78)§
Proximal colon15.225.230.20.60 (0.58-0.63)§0.50 (0.48-0.53)§
    Cecum (C18.0)4.99.911.30.49 (0.46-0.52)§0.43 (0.39-0.47)§
    Ascending (C18.2)4.37.18.40.61 (0.56-0.66)§0.51 (0.47-0.56)§
    Transverse plus two flexures (C18.3 to C18.5)5.98.210.60.72 (0.66-0.79)§0.56 (0.51-0.62)§
Distal colon17.718.019.10.98 (0.93-1.03)0.93 (0.88-0.98)§
    Descending (C18.6)3.03.04.41.000.68 (0.58-0.79)§
    Sigmoid colon (C18.7)14.715.114.70.97 (0.91-1.03)1.00
Rectum19.220.117.40.96 (0.93-1.00)1.10 (1.04-1.16)§
    Rectosigmoid junction (C19.9)6.16.45.50.95 (0.88-1.02)1.11 (1.01-1.22)§
    Rectum (C20.9)13.213.711.90.96 (0.90-1.03)1.11 (1.03-1.20)§
  • * Rates are per 100,000 and age adjusted to the 2000 U.S. population standard.

  • Source: NAACCR 1995 to 2000 analytic data file, including California, Colorado, Connecticut, Atlanta (Georgia), Hawaii, Iowa, Idaho, Illinois, Kentucky, Louisiana, Michigan, Minnesota, Nebraska, New Jersey, New Mexico, North Carolina, Pennsylvania, Rhode Island, Utah, Seattle/Puget Sound (Washington), West Virginia, Wisconsin, and Wyoming.

  • International Classification of Diseases for Oncology, Second Edition topograph codes are C18.0 to C18.9, C19.9, C20.9, and C26.0. Lymphomas were excluded.

  • § The rate ratio is significantly different (P < 0.05) from 1.00.

  • Appendiceal cancers were not included in this group.