a<p>Western Europe (n = 229, 7 from other Scandinavian countries than Norway, 5 with other Western-European background (3 born in North America)).</p>b<p>Women with ethnic origin from low- and middle-income countries in Asia, Middle East, Africa and south/central-America.</p><p>(includes two women from East Asian countries now classified as high income countries).</p>c<p>HELLP: severe complication to preeclampsia (HEmolysis, ELevated liver enzymes and Low Platelet count).</p>d<p>Composite of four birth complications; meconium-stained amniotic fluid, Apgar <7 after 5 min, grade 3–4 perineal tear or acute caesarean section.</p>e<p>Based on last menstrual period for all births in study sample, includes 37 with ultrasound-derived term.</p>f<p>Small for gestational age (SGA) and large for gestational age (LGA), calculated from Norwegian national references, stratified by GW and sex.</p>g<p>Missing in 43 (8%) neonates, mostly due to intrauterine breech position, family history of hip-dysplasia or other circumstances restricting stretching of the baby.</p
