Term birthweight centiles for babies from New Zealand's main ethnic groups

McCowan, Lesley; Stewart, Alistair

doi:10.1111/j.1479-828x.2004.00273.x

Cited by 20 publications

(20 citation statements)

References 15 publications

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“…The median birth weight of live male singletons in our study (3574g) is nearly identical to the New Zealand median male birth weight at 40 weeks gestation in 1990/91, and midway between European birth weight medians at 39 and 40 weeks gestation in the late 1990s in Auckland (McCowan & Stewart, 2004; Thompson et al, 1994). These comparisons suggest that maternal nutrition in New Zealand in the early twentieth century was similar to modern standards.…”

Section: Discussionsupporting

confidence: 72%

Birth weight and adult health in historical perspective: Evidence from a New Zealand cohort, 1907–1922

Roberts

Wood

2014

Social Science & Medicine

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We provide new historical evidence on the developmental origins of health and disease in a cohort of boys born between 1907 and 1922 in Wellington, New Zealand. Using a dataset of 1,523 birth records that include birth weight and length we find 852 (58%) of the adult cohort in World War II records measuring stature, body mass and blood pressure. On average, the boys weighed 3.5kg at birth, similar to Australian and American babies of the era, and nearly identical to full-term New Zealand babies in the 1990s. Using OLS regression models we estimate the effect of birth weight on adult stature and systolic blood pressure. We find an increase in birth weight of 1kg is associated with an increase in stature of 2.6cm (95% confidence interval [CI] 1.6cm to 3.6cm), and a decrease in systolic blood pressure of 2.1 mm/Hg (95% CI −5.00 to 0.67). This is the earliest cohort by fifty years for whom the fetal origins hypothesis has been examined in early adulthood. Our estimates of the effect of birth weight on blood pressure are towards the upper end of the range of published estimates in modern cohorts.

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Section: Discussionsupporting

confidence: 72%

Birth weight and adult health in historical perspective: Evidence from a New Zealand cohort, 1907–1922

Roberts

Wood

2014

Social Science & Medicine

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“…There is evidence that both birth weight (30,31) and body composition (32,33) differ according to ethnic group, and there were too few children from nonwhite ethnic groups (4% of the cohort) to analyze separately.…”

Section: Statistical Analysesmentioning

confidence: 99%

Associations of size at birth and dual-energy X-ray absorptiometry measures of lean and fat mass at 9 to 10 y of age

Rogers

Ness

Steer

et al. 2006

The American Journal of Clinical Nutrition

113

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Background: Birth weight has been positively associated with risk of overweight in later life. However, little information exists on how weight and length at birth are associated with subsequent lean and total body fat. Objective: We investigated the association between weight and length at birth and body composition and fat distribution in childhood. Design: Body composition was measured by using dual-energy X-ray absorptiometry in 9 -10-y-old subjects (n ҃ 3006 boys and 3080 girls). Weight and length at birth were measured or taken from hospital records. Results: Birth weight was positively associated with both lean body mass (LBM) and total body fat at 9 -10 y of age in both sexes. LBM rose by 320 g per 1-SD increase in birth weight (P 0.001), and total body fat rose by 2.5% (P ҃ 0.001), but birth weight was unassociated with the fat-to-lean mass ratio (FLR). Ponderal index (PI) at birth (ie, weight/length 3 ) was positively associated with LBM, total body fat, and the FLR in both sexes; the FLR increased by 2.7% in boys (P ҃ 0.021) and by 5.0% in girls per 1-SD increase in PI (P 0.001). Weight and length at birth did not predict central adiposity; although trunk fat had a strong positive association with PI at birth, this association disappeared after adjustment for total body fat. Conclusions: Higher PI at birth is associated with both higher fat and lean mass in childhood but also with an increase in the FLR. PI at birth is a better predictor of subsequent adiposity than is birth weight.Am J Clin Nutr 2006;84:739 -47.

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“…SGA was defined as weight below the 10th customised birth weight centile (16) , and spontaneous preterm birth was defined as delivery before 37 weeks of gestation. Women were screened for GDM between 24 and 28 weeks of gestation with a non-fasting 50-g polycose challenge in community laboratories, according to the Auckland District Health Board Guidelines.…”

Section: Participantsmentioning

confidence: 99%

The relationship between 25-hydroxyvitamin D concentration in early pregnancy and pregnancy outcomes in a large, prospective cohort

et al. 2016

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Type of publicationArticle (peer-reviewed)Link to publisher's version http://dx.doi.org/10.1017/S0007114516003202Access to the full text of the published version may require a subscription. Rights © The Authors 2016Embargo information Access to this article is restricted until 12 months after publication by the request of the publisher Abstract Vitamin D insufficiency and deficiency have been associated with an increased risk of adverse pregnancy outcomes. Controversy remains as findings have been inconsistent between disparate populations. The aim of this study was to investigate the relationship between vitamin D status and pregnancy outcomes in a large, prospective pregnancy cohort. 25-Hydroxyvitamin D concentration was analysed in serum samples collected at 15 weeks of gestation from 1710 New Zealand women participating in a large, observational study. Associations between vitamin D status and pre-eclampsia, preterm birth, small for gestational age (SGA) and gestational diabetes were investigated. The mean 25-hydroxyvitamin D concentration was 72·9 nmol/l. In all, 23 % had 25-hydroxyvitamin D concentrations <50 nmol/l, and 5 % of participants had concentrations <25 nmol/l. Women with 25-hydroxyvitamin D concentrations <75 nmol/l at 15 weeks of gestation were more likely to develop gestational diabetes mellitus than those with concentrations >75 nmol/l (OR 2·3; 95 % CI 1·1, 5·1). However, this effect was not significant when adjustments were made for BMI and ethnicity (OR 1·8; 95 % CI 0·8, 4·2). 25-Hydroxyvitamin D concentration at 15 weeks was not associated with development of pre-eclampsia, spontaneous preterm birth or SGA infants. Pregnancy complications were low in this largely vitamin D-replete population.Key words: Vitamin D: Gestational diabetes mellitus: Pre-eclampsia Much progress has been made in the screening, diagnosis and management of important pregnancy disorders, but little progress has been made in the prevention of such disorders. Preeclampsia remains the second most common cause of maternal death worldwide (1) . Prematurity, mostly due to spontaneous preterm birth, is the leading cause of death among infants worldwide (2) . This is followed by growth restriction in term infants (3) . Furthermore, infants born preterm or with low birth weight have an increased risk of CVD and metabolic diseases later in life, the leading cause of death in adulthood (4) . The incidence of gestational diabetes mellitus (GDM) is increasing rapidly worldwide (5) and is associated with lifelong risks of metabolic disease in both mother and baby (6,7) . An association between low vitamin D and adverse pregnancy outcomes was first identified in the early 2000s (8) ; consequently, vitamin D has been postulated as a possible intervention strategy to reduce pregnancy complications. A recent meta-analysis found that low vitamin D, defined variably by the authors of included studies, was associated with an increased likelihood of pre-eclampsia (OR 1·79; 95 % CI 1·25, 2·58), small-for-gestational age (SGA) babies (OR 1·...

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Term birthweight centiles for babies from New Zealand's main ethnic groups

Abstract: These ethnic specific centile charts are likely to identify term babies with inappropriate growth better than population centiles generated predominantly from one ethnic group.

Cited by 20 publications

References 15 publications

Birth weight and adult health in historical perspective: Evidence from a New Zealand cohort, 1907–1922

Birth weight and adult health in historical perspective: Evidence from a New Zealand cohort, 1907–1922

Associations of size at birth and dual-energy X-ray absorptiometry measures of lean and fat mass at 9 to 10 y of age

The relationship between 25-hydroxyvitamin D concentration in early pregnancy and pregnancy outcomes in a large, prospective cohort

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