a: Denominators differ due to missing data.
b: Pregnancy outcomes were adjusted for maternal age, ethnicity, total
years of full-time education, household income, gravidity, intake of
alcohol and recreational drugs, smoking, pre-pregnancy body mass index
(continuous), use of multivitamin supplements, Edinburgh Postnatal
Depression Scale (EPDS), The State-Trait Anxiety Inventory (STAI),
Perceived Stress Scale (PSS-10), physical activity, infertility
treatment and asthma. Birth outcomes were additionally adjusted for
infant’s sex.
c: Reasons for admission: preterm, respiratory distress infection,
feeding problem, hypoglycaemia, drug withdrawal, SGA, birth asphyxia,
congenital abnormality, phototherapy and cyanosis.