Differences between European birthweight standards: impact on classification of ‘small for gestational age’

Hemming, Karla; Hutton, Jane; Glinianaia, SV; Jarvis, Stephen; Platt, Mary Jane

doi:10.1017/s0012162206001988

Cited by 28 publications

(16 citation statements)

References 17 publications

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“…Because of the varying quality of the data in such a multicentre study,26 conclusions should be drawn with care. However, using a strategy developed by Jarvis et al ,18 the percentage of small for gestational age in children with dyskinetic cerebral palsy was higher than expected in the population.…”

Section: Discussionmentioning

confidence: 99%

Dyskinetic cerebral palsy in Europe: trends in prevalence and severity

Himmelmann

McManus

Hagberg

et al. 2009

Archives of Disease in Childhood

140

117

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Section: Discussionmentioning

confidence: 99%

Dyskinetic cerebral palsy in Europe: trends in prevalence and severity

Himmelmann

McManus

Hagberg

et al. 2009

Archives of Disease in Childhood

140

117

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“…Ideally, up-to-date reference data from the same or a similar population are required [14]. The choice of the reference population has a considerable impact on the classification, especially for preterm infants [27]. …”

Section: Prenatal Growthmentioning

confidence: 99%

Growth of Preterm Born Children

et al. 2008

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Background: In this review, we describe the growth of (very) preterm infants or (very) low-birth-weight infants from birth until adulthood. Methods: A systematic analysis of growth of these infants is thwarted by different definitions (classification by gestational age or birth weight) used in the literature. Results: The early postnatal period of these individuals is almost invariably characterized by substantial growth failure. In the majority of preterm infants this is followed by a period of catch-up growth, which starts in early infancy and usually stops at 2–3 years of age, although in some cases it may continue into adolescence. Catch-up growth is usually incomplete, so that infants born preterm remain shorter and lighter than term-born peers during childhood, adolescence, and adulthood. Disproportionate catch-up growth in height and weight may lead to an altered body composition in adulthood, especially in females. Conclusion: Though early catch-up growth has shown to be beneficial for neurodevelopmental outcome, it is also associated with adverse metabolic consequences in adulthood. As the first generation of (very) preterm infants is now reaching young adulthood, future follow-up studies on these effects are warranted.

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“…Population‐based birthweight standards are routinely stratified by factors thought to influence birthweight in a physiological way, such as sex and parity, 8 but not by factors thought to affect weight in a pathological way (such as smoking status). Customised standards adjust expected birthweight further by considering the influence of maternal characteristics such as maternal height and weight, often arguing that these variables affect weight in a physiological way.…”

Section: Introductionmentioning

confidence: 99%

Fetal growth and birthweight standards as screening tools: methods for evaluating performance

Hemming

Bonellie

Hutton

2011

BJOG

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Objective To discuss different methods for evaluating fetal growth and population-based birthweight standards relevant to different uses: either in antenatal care or in epidemiology.Design Population-based cohort study.Setting Routinely collected data in Scotland.Population A total of 540 849 singletons born after 24 weeks between 1980 and 2003.Methods The performance of a fetal growth standard and a population-based birthweight standard are compared in two ways. First, we consider the accuracy of estimated risks of stillbirth at any point during the remaining pregnancy, a measure that is relevant in antenatal care. Second, the rates of stillbirth at each gestation, which are measures relevant in epidemiology, are compared with the actual rates.Main outcome measures Standard measures of screening and diagnostic performance: sensitivity, specificity, and positive and negative predictive values.Results In clinical care, the evidence points towards using fetal growth standards: sensitivity at term is about 30%, increasing to 43% for preterm births (24-31 weeks of gestation), compared with about 29% across all ages under the birthweight standard. Positive predictive values are about 1% across gestations. For epidemiology, the evidence is not so clear-cut: preterm, the population birthweight standard has higher sensitivity and specificity, but this is not the case in the full-term weeks.Conclusions The performance of fetal growth and birthweight standards should be evaluated in different ways, depending on whether they are intended for use in antenatal care or in epidemiological investigations.

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Differences between European birthweight standards: impact on classification of ‘small for gestational age’

Cited by 28 publications

References 17 publications

Dyskinetic cerebral palsy in Europe: trends in prevalence and severity

Dyskinetic cerebral palsy in Europe: trends in prevalence and severity

Growth of Preterm Born Children

Fetal growth and birthweight standards as screening tools: methods for evaluating performance

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