Table 3.

Age-adjusted incidence rates of invasive breast cancer by neighborhood SES, Hispanic enclave, and stage at diagnosis in Hispanic females (n = 12,563), California, 1998 to 2002: incidence of breast cancer per 100,000 person-years, age standardized to the 2000 U.S. population, with 95% CIs

Race/ethnicityCases (n)Rate (95% CI)Rate ratio* (95% CI)
SES (quintiles)
    All stages of diagnosis
        1 (lowest)3,71066.2 (64.0-68.5)Reference
        23,12980.8 (77.8-83.8)1.22 (1.16-1.28)
        32,47488.3 (84.7-92.0)1.33 (1.26-1.41)
        41,899103.1 (98.4-108.0)1.56 (1.47-1.65)
        5 (highest)1,351118.8 (112.3-125.6)1.79 (1.68-1.92)
    Localized stage at diagnosis
        1 (lowest)1,74332.3 (30.7-33.9)Reference
        21,63543.4 (41.2-45.6)1.34 (1.25-1.44)
        31,30448.1 (45.4-50.9)1.49 (1.38-1.61)
        41,05658.7 (55.1-62.4)1.82 (1.68-1.97)
        5 (highest)79771.7 (66.7-77.1)2.22 (2.03-2.43)
    Regional/distant stage at diagnosis
        1 (lowest)1,72729.4 (28.0-30.9)Reference
        21,31032.5 (30.7-34.4)1.10 (1.02-1.19)
        31,02434.6 (32.5-36.9)1.18 (1.08-1.28)
        476039.6 (36.7-42.6)1.35 (1.23-1.47)
        5 (highest)50742.3 (38.6-46.3)1.44 (1.29-1.60)
Hispanic enclave index (quintile)
    All stages of diagnosis
        1 (highest)4,33367.5 (65.4-69.6)Reference
        23,23078.5 (75.7-81.4)1.16 (1.11-1.22)
        32,264100.2 (95.9-104.6)1.48 (1.41-1.56)
        41,598105.9 (100.6-111.5)1.57 (1.48-1.67)
        5 (lowest)1,138121.0 (113.8-128.5)1.79 (1.67-1.92)
    Localized stage at diagnosis
        1 (highest)2,12534.5 (32.9-36.0)Reference
        21,66841.6 (39.4-43.7)1.21 (1.13-1.29)
        31,22155.7 (52.5-59.0)1.62 (1.50-1.74)
        488759.8 (55.8-64.0)1.74 (1.60-1.88)
        5 (lowest)63469.6 (64.1-75.5)2.02 (1.84-2.22)
    Regional/distant stage at diagnosis
        1 (highest)1,98529.5 (28.1-30.9)Reference
        21,38732.4 (30.7-34.3)1.10 (1.02-1.18)
        391538.5 (35.9-41.2)1.31 (1.20-1.42)
        462139.6 (36.4-43.0)1.34 (1.22-1.48)
        5 (lowest)42041.6 (37.5-45.9)1.41 (1.26-1.58)
Combined SES and Hispanic enclave
    All stages of diagnosis
        Low SES, high enclave5,94869.5 (67.7-71.4)Reference
        High SES, low enclave4,109108.5 (105.1-112.0)1.56 (1.50-1.63)
        Low SES, low enclave89196.7 (90.1-103.5)1.39 (1.29-1.50)
        High SES, high enclave1,61581.2 (77.2-85.5)1.17 (1.10-1.24)
    Localized stage at diagnosis
        Low SES, high enclave2,92035.3 (34.0-36.7)Reference
        High SES, low enclave2,28462.0 (59.4-64.7)1.75 (1.66-1.86)
        Low SES, low enclave45850.8 (46.0-55.8)1.44 (1.29-1.59)
        High SES, high enclave87345.1 (42.1-48.3)1.28 (1.18-1.38)
    Regional/distant stage at diagnosis
        Low SES, high enclave2,69130.1 (28.9-31.3)Reference
        High SES, low enclave1,61040.3 (38.3-42.5)1.34 (1.25-1.43)
        Low SES, low enclave34635.9 (32.0-40.0)1.19 (1.05-1.34)
        High SES, high enclave68132.8 (30.3-35.5)1.09 (1.00-1.19)
  • *Ratio of the incidence rate in U.S.-born to the incidence rate in foreign-born.

  • Low SES includes quintiles 1 and 2; high SES includes quintiles 3, 4, and 5; low enclave includes quintiles 3, 4, and 5; high enclave includes quintiles 1 and 2.