Gestational weight gain outside the 2009 Institute of Medicine recommendations: novel psychological and behavioural factors associated with inadequate or excess weight gain in a prospective cohort study.

Background: Previous studies have noted traditional physical, demographic, and obstetrical predictors of inadequate or excess gestational weight gain, but the roles of psychological and behavioral factors are not well established. Few interventions targeting traditional factors of gestational weight gain have been successful, necessitating exploration of new domains. The objective of this study was to identify novel psychological and behavioral factors, along with physical, demographic, and obstetrical factors, associated with gestational weight gain that is discordant with the 2009 Institute of Medicine guidelines (inadequate or excess gain).

Vaginal birth vs caesarean section for extremely preterm vertex infants: a systematic review and meta-analyses.

Purpose: To synthesize evidence of mode of birth in extremely preterm vertex infants.

Methods: We searched MEDLINE, EMBASE, CINAHL, Cochrane CENTRAL, Web of Science, and ClinicalTrials.gov (January 1995-July 2019).