Incidence Of Low Birthweight Births Research Articles

A prospective study of gestation and birthweight in Aboriginal pregnancies in far north Queensland

This study aimed to determine the cause(s) of the increased incidence of low birthweight birth in Aboriginal pregnancies. The study prospectively examined a cohort of Aboriginal women presenting for antenatal care before 20 weeks gestation (ultrasound proven) and a reference cohort of Caucasian women in four remote North Queensland communities served by the Far North Regional Obstetric and Gynaecological Service (FROGS) and the antenatal clinic at Cairns Base Hospital. Women with no known medical factors affecting fetal growth or gestation were recruited. Of the 102 Aboriginal and 101 Caucasian women recruited, 96 Aboriginal and 96 Caucasian women completed the study, providing groups of sufficient size to allow statistical assessment at 80% power and 95% significance. Outcomes measured were gestation at delivery, planned or spontaneous birth, neonatal anthropometric measurements and Dubowitz score. The phenotypic and demographic characteristics of the women, their pregnancies, and their babies were also compared to understand the major associations with low birthweight birth in the Aboriginal women. Apart from Aboriginal ethnicity, excessive alcohol use in pregnancy, low maternal body mass index (BMI), and low maternal age had significant negative correlations with birthweight, and excessive tobacco use in pregnancy and high maternal gravidity showed strong similar trends. Culturally appropriate programs need to be funded and developed to reduce the incidence of low birthweight Aboriginal birth, rather than medical programs primarily aimed at the reduction of the incidence of preterm labour.

The implications of current policies on the production of infant health

This study examines the possible link between the current trend to reduce availability of abortion services and the incidence of low birthweight births. Using current data on births and abortions in Atlanta and New York City, we update and expand the earlier empirical results of Grossman and Joyce (The Journal of Political Economy, 1990, 98 (5), 98-1007). Using their latent variable model framework, we find some evidence for the ‘cost of abortion’ model, which assumes that increasing the full costs of abortion will be associated with more low birthweight, hence less healthy, infants. These results indicate that current trends towards the reduction of funding for various social services could exacerbate the problem of low birthweight.

Low aboriginal birth-weight--prematurity or intrauterine growth restriction?

Two thousand, nine hundred and twenty-eight consecutive singleton public births at Cairns Base Hospital were studied retrospectively. Contrary to popular clinical belief, there was no statistically significant difference in the birth-weights, corrected for gestational age between Aboriginal babies and Caucasian babies. There was a highly significant excess of preterm Aboriginal births, when compared with Caucasian births. This study suggests that any attempt to reduce the high incidence of low birth-weight births in Aboriginal people should be directed at reducing the incidence of preterm birth, rather than the supposed high incidence of intrauterine growth restriction.