A nomogram to predict extremely preterm birth in women with singleton pregnancies undergoing cervical cerclage.

ABSTRACT:

Objective

To develop a nomogram to predict preterm birth before 28 weeks in pregnant women undergoing cervical cerclage.

Study design

We retrospectively studied the medical records on pregnant women who underwent cervical cerclage in January 2016 to September 2020. We developed the model from a development cohort in Women's Hospital, Zhejiang university, School of medicine, which randomly divided by 7:3 into training cohort for nomogram development, and internal validation cohort to confirm the model's performance. We then tested the nomogram in an external validation cohort over a similar period. The Harrell's C-index, calibration curve, decision curve analyses (DCA) were performed to assess the model.

Results

528 patients formed the development cohort, and 97 patien

SUBMITTER: Lv M 

PROVIDER: S-EPMC9561736 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature