Evidence map›Paper›PMID 32794153›Full record

ArticleMaternal and child health journal2020

Development of the Birthweight Appropriateness Quotient: A New Measure of Infant's Size.

Kristen S Gibbons, H David McIntyre, Abdullah Mamun, Allan M Z Chang

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Article in Maternal and child health journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 authors.

Kristen S GibbonsMothers and Babies Research, Mater Research Institute - The University of Queensland, South Brisbane, Australia. k.gibbons@uq.edu.au.ORCID http://orcid.org/0000-0002-5679-0932
H David McIntyreMothers and Babies Research, Mater Research Institute - The University of Queensland, South Brisbane, Australia.
Abdullah MamunInstitute for Social Science Research, The University of Queensland, Brisbane, Australia.
Allan M Z ChangDepartment of Obstetrics and Gynaecology, Chinese University of Hong Kong, Shatin, Hong Kong.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe customised birthweight model can be used to improve detection of babies that may be at risk of adverse outcomes associated with abnormal growth, however it is currently used in conjunction with either an intrauterine growth standard or the individualised birthweight ratio (IBR), both of which have significant methodological flaws. Our aim was to investigate the statistical validity of the IBR and attempt to develop a new measurement to represent the appropriateness of an infant's size at birth that will support clinicians in identifying infants requiring further attention.

methodsRoutinely collected hospital maternity and neonatal data on singleton, term births from a tertiary Australian hospital were extracted for the time period 1998-2009. The relationships between birthweight, customised birthweight and IBR are investigated using correlation, regression analysis and division of births into groups of < 2500 g, 2500-4000 g and > 4000 g. A new measure, the Birthweight Appropriateness Quotient (BAQ), is developed. The utility of the BAQ is compared with IBR and birthweight to identify infants with a composite neonatal morbidity outcome.

resultsStatistical flaws with the IBR due to significant correlation between birthweight and customised birthweight and a heterogenous relationship between these two measurements across the range of birthweight are present. BAQ is uncorrelated with birthweight. Comparison of BAQ and IBR as indicators of adverse neonatal outcome demonstrates that BAQ identifies babies at risk due to their small size and those babies at risk due to inappropriate size. CONCLUSIONS FOR PRACTICE: BAQ is a customised measurement of an infant's size free of the statistical flaws experienced by the IBR with the ability to identify at-risk infants.

Indexed as

Birth WeightGrowth ChartsAdultBody HeightBody Mass IndexFemaleFetal DevelopmentHumansInfantInfant, NewbornNeonatologyNormal DistributionPregnancyReference ValuesBirth weightFetal growthNeonatal morbidityPolynomial regression

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