Mortality in Very Preterm and Very Low Birth Weight Infants According to Place of Birth and Level of Care: Results of a National Collaborative Survey of Preterm and Very Low Birth Weight Infants in the Netherlands

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Abstract
As part of a collaborative project in the Netherlands in 1983, for which data were collected on 1,338 newborn infants (<32 weeks' gestation and/or <1,500 g birth weight), all infants were assigned to one of three levels of care according to hospital of birth. Considerable centralization was achieved by antenatal and neonatal transport. Although the uncorrected mortality rates were similar, the mortality odds (adjusted for four and 22 potential confounding perinatal factors, respectively) were significantly higher in level 1 and level 2 hospitals compared with level 3 hospitals (tertiary perinatal care centers). By extending the facilities for full perinatal intensive care in level 3 centers and thus providing optimal care for all such infants, the overall mortality rate is expected to decrease further.