Rate of gestational weight gain, pre-pregnancy body mass index and preterm birth subtypes: a retrospective cohort study from Peru.

ABSTRACT:

Objective

To examine the shape (functional form) of the association between the rate of gestational weight gain, pre-pregnancy body mass index (BMI), and preterm birth and its subtypes.

Design

  Retrospective cohort study.

Setting

  National reference obstetric centre in Lima, Peru.

Population

  Pregnant women who delivered singleton babies during the period 2006-2009, resident in Lima, and beginning prenatal care at ≤ 12 weeks of gestation (n=8964).

Methods

  Data were collected from the centre database. The main analyses consisted of logistic regression with fractional polynomial modelling.

Main outcome measures

  Preterm birth and its subtypes.

Results

  Preterm birth occurred in 12.2% of women, being mostly idiopathic (85.7%). The rate

SUBMITTER: Carnero AM 

PROVIDER: S-EPMC4112735 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature