Influence of chest/head circumference ratio at birth on obstetric and neonatal outcomes

The Japan environment and children's study

Bibliographic Data

ID19459751
AuthorsNaw Awn J-P (0000-0002-6862-2290, Department of Environmental Medicine, Kochi Medical School Kochi University Nankoku Kochi Japan, corresponding author), Naomi Mitsuda (0000-0001-7454-0673, Department of Environmental Medicine, Kochi Medical School Kochi University Nankoku Kochi Japan), Masamitsu Eitoku (0000-0002-1715-9670, Department of Environmental Medicine, Kochi Medical School Kochi University Nankoku Kochi Japan), Keiko Yamasaki (0000-0003-4247-9040, Department of Environmental Medicine, Kochi Medical School Kochi University Nankoku Kochi Japan), Nagamasa Maeda (Department of Obstetrics and Gynecology, Kochi Medical School Kochi University Nankoku Kochi Japan), Mikiya Fujieda (0000-0002-8975-0400, Department of Pediatrics, Kochi Medical School Kochi University Nankoku Kochi Japan), Narufumi Suganuma (0000-0003-1610-6216, Department of Environmental Medicine, Kochi Medical School Kochi University Nankoku Kochi Japan)
Year2023
Volume35
Issue6
Pagese23875-e23875
Publication date2023-06-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Human Biology (JOURNAL)
Journal identifiersISSN: 1042-0533 • E-ISSN: 1520-6300
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajhb.23875
PMID36744825
OpenAlexW4319294821
LanguageEN
References cited34

OBJECTIVES: Some newborns that are not small-for-gestational-age (non-SGA, birthweight ≥10th percentile for a given gestational age) may have pathologic growth restrictions. This study examined the association of adverse obstetric and neonatal outcomes with chest/head circumference ratio at birth in non-SGA and SGA newborns. METHODS: This study was a cross-sectional evaluation of data from a nationwide prospective birth cohort study, the Japan Environment and Children's Study. We analyzed 93 690 non-anomalous singletons born at 34-41 gestational weeks. We defined low, normal, and high chest/head circumference ratio as 90th percentile, respectively, according to the internally constructed chest/head circumference percentile chart. Modified Poisson regression was used to estimate adjusted prevalence ratios (aPR) for the outcomes studied. RESULTS: Compared with non-SGA newborns with a normal ratio, those with a low ratio had an increased occurrence of low birthweight (1.75, 1.58-1.94 [aPR, 95% confidence interval]), cesarean delivery (1.34, 1.29-1.38), Apgar score <7 at 5 min (1.57, 1.14-2.17), respiratory complications (1.20, 1.04-1.39), and prolonged hospitalization (1.36, 1.30-1.42). In contrast, the high-ratio group had a lower rate of low birthweight (0.71, 0.59-0.86), cesarean delivery (0.82, 0.77-0.87), and prolonged hospitalization (0.83, 0.78-0.89). In SGA newborns, a low ratio was associated with increased aPRs for low birthweight, cesarean delivery, hypoglycemia, and prolonged hospitalization, whereas a high ratio showed no such association. CONCLUSIONS: Findings indicate that the chest/head circumference ratio at birth influence obstetric and neonatal outcomes regardless of the birthweight status

Apgar score · Birth weight · Confidence interval · Gestational age · Growth chart · Obstetrics · Percentile · Poisson regression · Population · Pregnancy · Prospective cohort study · Small for gestational age · Gestational Diabetes Research and Management · Maternal and Neonatal Healthcare · Medicine · Pregnancy and preeclampsia studies · Internal Medicine · Pediatrics

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