Liebrechts-Akkerman, G.

smoking parent postnatal factor postnatal smoking p-value education risk factor death infant death syndrome <0.001 risk factors control table study covariate netherland birth european caucasian origin ethnical caucasian indicator infant breastfeeding dutch analysis infection ratio sids cases significance education parents 1 education parents 2 european gender odds ratios non-european caucasian age-matched dutch controls position syndrome category association effect finding non-european child analyses result pediatr histological group liebrechts-akkerman case group 0.19 1 year histological findings urine bladder infection postnatal smoking 2 multivariate 0.27 rotterdam 20 years regression publication multivariate analysis smoke paediatric sids categories ethnical origin department 1996–2000 education programme subgroups status pathology 0.65 0.81 fishers 0.29 0.28