An anthropometric survey of US pre-term and full-term neonates.
BACKGROUND: Anthropometric data prove valuable for screening and monitoring various medical conditions. In young infants, however, only weight, length and head circumference are represented in publicly accessible databases. AIM: To characterise length and circumferential measures in pre-term and full-term infants up to 90 days post-natal. SUBJECTS AND METHODS: In eight US medical centres, trained raters recorded humeral, ulnar, femoral, tibial and fibular lengths along with mid-upper arm, mid-thigh, chest, abdominal and neck circumference. Data were pooled by post-menstrual age into 1-week intervals and population curves created using the lambda, mu and sigma (LMS) method. Goodness-of-fit was assessed by examining de-trended quantile-quantile plots, Q statistics and fitted centiles overlaid on empirical centiles. RESULTS: In total, 2097 infants were enrolled in this study with a mean ± SD gestational age and post-natal age of 37.1 ± 3.3 weeks and 27.3 ± 25.3 days, respectively. A re-scale option was used to describe all curves. The resultant models reliably characterised anthropometric measures from 33-52 weeks PMA, with less certainty at the extremes (27-55 weeks). CONCLUSION: The population curves generated under this investigation expand existing reference data on a comprehensive set of anthropometric traits in infants through the first 90 days post-natal.
Abdel-Rahman, SM; Paul, IM; Delmore, P; James, L; Fearn, L; Atz, AM; Poindexter, BB; Al-Uzri, A; Lewandowski, A; Harper, BL; Smith, PB; Best Pharmaceuticals for Children Act – Pediatric Trials Network,
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