Uterine distention as a factor in birth timing: retrospective nationwide cohort study in Sweden.

ABSTRACT:

Objectives

To determine whether uterine distention is associated with human pregnancy duration in a non-invasive observational setting.

Design

Retrospective cohort study modelling uterine distention by interaction between maternal height and uterine load.

Setting

The study is based on the 1990-2013 population data from all delivery units in Sweden.

Participants

Uncomplicated first pregnancies of healthy Nordic-born mothers with spontaneous onset of labour. Pregnancies were classified as twin (n=2846) or singleton (n=527 868). Singleton pregnancies were further classified as carrying a large for gestational age fetus (LGA, n=24 286) or small for gestational age fetus (SGA, n=33 780).

Outcome measures

Statistical interaction between maternal height and ute

SUBMITTER: Bacelis J 

PROVIDER: S-EPMC6252709 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature