Impact of multiple births and elective deliveries on the trends in low birth weight in Norway, 1967-1995
Article Abstract:
The overall proportion of low-birth-weight births is not a good indicator of health in a population with extensive use of obstetric procedures that affect gestational age or extensive use of assisted fertilization, which raises the incidence of multiple births. The impact of elective deliveries and multiple births on trends toward low birth weight were studied in Norway, 1967-1995. To describe trends, 1.7 mil live births and stillbirths registered in the Medical Birth Registry were analyzed. Low-birth-weight infants made up 5.3% of the total in 1967 and 4.5% in 1979. In 1995 the low-birth-weight infants were 5.3% of the total and a steady increase had taken place. Similar trends existed in proportion of preterm births. Mean birth weight was 3,456 g in 1967 and 3,518 g in 1995. The increase in prevalence of low birth weight was related to single births, 1979-1987. After 1987 it was related to multiple births, which went from 2.3% of all births, 1987, to 3.1%, 1995.
Publication Name: American Journal of Epidemiology
Subject: Health
ISSN: 0002-9262
Year: 1999
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Influence of consanguinity and maternal education on risk of stillbirth and infant death in Norway, 1967-1993
Article Abstract:
To determine influence of maternal education and of consanguinity on risk of infant death and stillbirth in Norway, children of Norwegian ethnic origin and of Pakistani ethnic origin have been studied for the 1967-93 period. In the Norwegian group, 17% of deaths could be attributed to factors associated with poor maternal education. In the Pakistanis the corresponding estimate was not significant. Risks of infant death and stillbirth were similar for children whose parents were not consanguineous in both groups, although, for the two groups, there are differences in socioeconomic status. Consanguinity did influence stillbirth and infant death independently of education of the mother.
Publication Name: American Journal of Epidemiology
Subject: Health
ISSN: 0002-9262
Year: 1998
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Birth weight and mortality in childhood in Norway
Article Abstract:
Information about birth weight and gestational age from the Norwegian Birth Registry for all children who survived the first year were studied to determine the association between intrauterine growth and childhood survival. Death were categorized into malformations, cancer, infections, accidents, and other causes. Cancer deaths showed an opposite association, while birth weight and childhood mortality need more cause-specific analyses to understand the connection.
Publication Name: American Journal of Epidemiology
Subject: Health
ISSN: 0002-9262
Year: 1998
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