- Cesarean delivery (CD) does not increase risk for preterm labor (PTL) in a subsequent pregnancy.
Why this matters
- The rates of CD are rising.
- Some studies suggest a link between history of CD and subsequent preterm delivery.
- Women can be counseled that in the absence of risk factors, CD does not increase the risk for preterm labor in a subsequent pregnancy.
- Mean age at delivery of a second baby was similar:
- mean age at delivery, 38.8 weeks;
- aOR, 1.46 (95% CI, 0.77-2.76);
- Vaginal delivery:
- mean age at delivery, 38.9 weeks;
- aOR, 1.40 (95% CI, 0.59-3.32).
- Retrospective cohort study.
- Women with first 2 consecutive singleton, low-risk pregnancies were identified through a database.
- A propensity score prediction model for term CD in the first pregnancy was developed; propensity score analysis used to match patients.
- Women with a CD in the first pregnancy (n=1142) compared with women with a vaginal delivery (n=1142) in the first pregnancy.
- The primary outcome was preterm delivery (
- Funding: None disclosed.
- Many participants excluded in the process of matching the cohort groups.