Table 2.
Prevalence Ratios and 95% Confidence Intervals for Maternal and Neonatal Birth Outcomes According to the Presence or Absence of a Maternal Cancer Diagnosis During Pregnancy
| Obstetric outcomes | Live births after cancer diagnosis in pregnancy N = 555 | Matched noncancer live births N = 2,667 | PR (95% CI)a | PR (95% CI)b |
|---|---|---|---|---|
| Preterm birth, n (%) | ||||
| <37 weeks | 136 (25) | 247 (9) | 2.65 (2.19–3.19) | 2.70 (2.24, 3.26) |
| <34 weeks | 25 (5) | 67 (3) | 1.79 (1.14–2.81) | 1.74 (1.12, 2.71) |
| Low birth weight, n (%) | 80 (14) | 198 (7) | 1.94 (1.52–2.48) | 1.97 (1.55, 2.50) |
| Small for gestational age, n (%) | 46 (8) | 261 (10) | 0.85 (0.63–1.14) | 0.88 (0.66, 1.19) |
| Apgar <7 at 5 minutes, n (%) | <11 | 34 (1) | 0.99 (0.44–2.22) | 0.90 (0.39, 2.06) |
| Induction of labor, n (%) | 156 (28) | 486 (18) | 1.54 (1.32–1.80) | 1.48 (1.27, 1.73) |
| Cesarean section, n (%) | 197 (36) | 797 (30) | 1.19 (1.05–1.35) | 1.18 (1.04, 1.34) |
a
Adjusts for matching factors (maternal age and year of birth).
b
Adjusts for matching factors (maternal age and year of birth), race/ethnicity, marital status, parity, and prenatal care timing.
CI, confidence interval; PR, prevalence ratio.