Table 5.

Association between Indigenous American ancestry (per 25% increase) and breast cancer risk factors: hormone therapy use, lower parity, and BMI

Odds ratio (95% confidence interval)Adjusted odds ratio (95% confidence interval)
History of hormone therapy use (yes vs no)
    All Latinas0.80 (0.66-0.97)0.78 (0.63-0.96)*
    U.S.-born Latinas0.71 (0.54-0.96)0.70 (0.51-0.95)
    Foreign-born Latinas0.89 (0.68-1.16)0.86 (0.64-1.16)
Low parity (<2 vs 2 full-term pregnancies)
    All Latinas0.78 (0.65-0.95)0.90 (0.72-1.12)*
    U.S.-born Latinas0.95 (0.72-1.26)1.04 (0.76-1.44)
    Foreign-born Latinas0.66 (0.51-0.87)0.78 (0.55-1.04)
Overweight (BMI 25-29.9 vs <25)
    All Latinas1.95 (1.42-2.67)1.93 (1.38-2.69)*
    U.S.-born Latinas1.22 (0.80-1.85)1.25 (0.79-1.96)
    Foreign-born Latinas3.29 (1.97-5.48)3.44 (1.97-5.99)
Obesity (BMI ≥30 vs <25)
    All Latinas1.51 (1.15-1.99)1.51 (1.12-2.04)*
    U.S.-born Latinas1.20 (0.83-1.75)1.26 (0.83-1.92)
    Foreign-born Latinas1.94 (1.29-2.93)1.95 (1.24-3.06)
  • * Adjusted for age, case/control status, grandparents' place of birth (Mexico, Central America, South America, Caribbean, United States, mixed origin), age at migration, education, and birthplace (U.S. born vs foreign born).

  • Adjusted for age, case/control status, grandparents' place of birth (Mexico, Central America, South America, Caribbean, United States, mixed origin), and education.

  • Adjusted for age, case/control status, grandparents' place of birth (Mexico, Central America, South America, Caribbean, United States, mixed origin), age at migration, and education.