Preconception indicators and associations with health outcomes reported in UK routine primary care data: a systematic review.

Background: Routine primary care data may be a valuable resource for preconception health research and to inform the provision of preconception care.

Aim: To review how primary care data could provide information on the prevalence of preconception indicators and examine associations with maternal and offspring health outcomes.

Design And Setting: Systematic review of observational studies using UK routine primary care data.