Skip to main content

Table 3 PR and 95% CI for preterm birth, low birthweight, and small for gestational age stratified by race/ethnicity

From: Prevalence of preterm, low birthweight, and small for gestational age delivery after breast cancer diagnosis: a population-based study

Race/ethnicity Breast cancer history Preterm birtha (<37 weeks) Low birthweighta (<2500 g) Small for gestational agea (<10th percentilec)
n PR (95% CI)b n PR (95% CI)b n PR (95% CI)b
Black, non-Hispanic No 75,286 1.00 71,159 1.00 90,006 1.00
Yes 40 1.31 (1.00–1.72) 41 1.49 (1.14–1.94) 41 1.44 (1.11–1.87)
White, non-Hispanic No 130,740 1.00 97,273 1.00 123,182 1.00
Yes 68 2.06 (1.67–2.54) 35 1.53 (1.12–2.08) 27 1.10 (0.77–1.58)
Black, non-Hispanicd No 75,286 1.45 (1.44–1.47) 71,159 1.82 (1.80–1.84) 90,006 1.82 (1.80–1.83)
Yes 40 1.90 (1.45–2.50) 41 2.71 (2.08–3.54) 41 2.62 (2.01–3.40)
  1. a P interaction of race/ethnicity and breast cancer history is 0.01 for preterm birth, 0.9 for low birthweight, and 0.2 for small for gestational age
  2. bAdjusted for mother’s age at infant delivery, education, marital status, parity, and smoking
  3. cBirthweight of infant is below the tenth percentile for the infant’s gestational age and sex
  4. dWhite women with no breast cancer history serve as the reference group for these comparisons
  5. CI confidence interval, PR prevalence ratio