Measured length of normal term infants changes over the first two days of life

Eric S. Shinwell, M. Shlomo

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Measured neonatal length may be influenced by reluctance of the measurer to extend the infant's limbs against the normal flexor posture. As the degree of flexion decreases over the first few days of life, measured length may increase. We conducted a study of the effect of postnatal age on measured length and on inter-observer correlation. The study sample consisted of 101 healthy term newborns. Correlation between measurements made before age 2 hours by the study nurse and by regular nurses was excellent with a mean difference of 0.61 ± 0.49 cm (r2 = 0.923). The mean measured length increased by 0.2 cm between admission and age 1 day (p = 0.057) and by a further 0.17cm by age 2 days (p = 0.001). This study demonstrates that measured length appears to change over the first 2 days of life.

Original languageEnglish
Pages (from-to)537-540
Number of pages4
JournalJournal of Pediatric Endocrinology and Metabolism
Issue number4
StatePublished - 2003
Externally publishedYes


  • Length
  • Neonate
  • Newborn


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