Pregnancy health document: obstetric and gestational history
Obstetric and gestational history data were collected via the Andalusian Regional Government’s Pregnancy Health Document. Given to all pregnant women in Andalusia at their first appointment with their midwife, it collects information on previous pregnancies and births, and on the patient’s gynaecological history and current pregnancy. Gestational age was calculated from the date of last menstruation corrected for cycles of 28 days, and subsequently corrected by ultrasound if needed16. The result was used to time the assessments made in the 16th and 34th w.g.