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Table 2 Age adjusted and multivariable PR and 95% CI for preterm birth, low birthweight, and small for gestational age

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

Ā 

Preterm birth (<37Ā weeks)

Low birthweight (<2500Ā g)

Small for gestational age (<10th percentilec)

n

Age adjusteda

PR (95% CI)

Multivariableb

PR (95% CI)

n

Age adjusteda

PR (95% CI)

Multivariableb

PR (95% CI)

n

Age adjusteda

PR (95% CI)

Multivariableb

PR (95% CI)

Breast cancer history

ā€ƒNod

206,026

1.00

1.00

168,432

1.00

1.00

213,188

1.00

1.00

ā€ƒYes

108

1.89 (1.60ā€“2.24)

1.67 (1.42ā€“1.97)

76

1.76 (1.43ā€“2.16)

1.50 (1.23ā€“1.84)

68

1.48 (1.19ā€“1.85)

1.30 (1.05ā€“1.61)

Chemotherapy

ā€ƒNo

38

1.31 (0.98ā€“1.76)

1.17 (0.87ā€“1.56)

28

1.28 (0.90ā€“1.82)

1.10 (0.78ā€“1.55)

26

1.14 (0.79ā€“1.64)

0.98 (0.68ā€“1.40)

ā€ƒYes

70

2.48 (2.03ā€“3.03)

2.17 (1.79ā€“2.63)

48

2.24 (1.73ā€“2.89)

1.92 (1.50ā€“2.45)

42

1.83 (1.39ā€“2.40)

1.63 (1.25ā€“2.13)

Time between diagnosis and delivery

ā€ƒ<2Ā years

62

2.86 (2.33ā€“3.52)

2.58 (2.12ā€“3.15)

38

2.29 (1.72ā€“3.04)

2.16 (1.64ā€“2.85)

26

1.43 (1.00ā€“2.04)

1.36 (0.96ā€“1.92)

ā€ƒ2ā€“4.9 years

30

1.36 (0.98ā€“1.90)

1.20 (0.86ā€“1.66)

20

1.20 (0.79ā€“1.82)

0.98 (0.65ā€“1.47)

21

1.20 (0.80ā€“1.79)

0.97 (0.66ā€“1.44)

ā€ƒā‰„5Ā years

16

1.19 (0.75ā€“1.87)

1.04 (0.66ā€“1.63)

18

1.79 (1.17ā€“2.74)

1.49 (0.98ā€“2.26)

21

2.08 (1.41ā€“3.06)

1.85 (1.27ā€“2.71)

  1. aAdjusted for motherā€™s age at infant delivery
  2. bAdjusted for motherā€™s age at infant delivery, education, marital status, parity, race/ethnicity, and smoking
  3. cBirthweight of infant is below the tenth percentile for the infantā€™s gestational ageĀ and sex
  4. dWomen with no breast cancer history serve as the reference group for all comparisons
  5. CI confidence interval, PR prevalence ratio