I J Griffin1, N M Pang, J Perring, R J Cooke. 1. Neonatal Nutrition Research Group Royal Victoria Infirmary University of Newcastle Newcastle-upon-Tyne, UK.
Abstract
AIM: To examine the reproducibility of crown-heel length measurement; the precision and reproducibility of knee-heel length measurement; and the association between the two in healthy preterm infants. METHODS: Paired crown-heel and knee-heel lengths were measured on 172 occasions by three observers in 43 preterm infants between 205 and 458 days of postconceptional age. RESULTS: Crown-heel length (CHL) measurement was highly reproducible, with a coefficient of variation (CV) of 0.41%. Knee-heel length (KHL) measurement was relatively precise (CV 0.78%), but less reproducible (intra-observer CV 1.77%, intra-observer CV 2.11%), especially in larger infants. The association between KHL and CHL was not consistent and varied with age. KHL was a poor predictor of CHL, with a 95% predictive interval of +/- 27.5 mm. CONCLUSIONS: KHL was less reproducible than CHL, especially in larger infants, and a poor predictor of CHL.
AIM: To examine the reproducibility of crown-heel length measurement; the precision and reproducibility of knee-heel length measurement; and the association between the two in healthy preterm infants. METHODS: Paired crown-heel and knee-heel lengths were measured on 172 occasions by three observers in 43 preterm infants between 205 and 458 days of postconceptional age. RESULTS: Crown-heel length (CHL) measurement was highly reproducible, with a coefficient of variation (CV) of 0.41%. Knee-heel length (KHL) measurement was relatively precise (CV 0.78%), but less reproducible (intra-observer CV 1.77%, intra-observer CV 2.11%), especially in larger infants. The association between KHL and CHL was not consistent and varied with age. KHL was a poor predictor of CHL, with a 95% predictive interval of +/- 27.5 mm. CONCLUSIONS: KHL was less reproducible than CHL, especially in larger infants, and a poor predictor of CHL.
Authors: Irene E Olsen; M Louise Lawson; Jareen Meinzen-Derr; Amy L Sapsford; Kurt R Schibler; Edward F Donovan; Ardythe L Morrow Journal: J Pediatr Date: 2008-11-28 Impact factor: 4.406
Authors: Leila Cheikh Ismail; Fabien A Puglia; Eric O Ohuma; Stephen T Ash; Deborah C Bishop; Rachel M Carew; Ayesha Salem Al Dhaheri; Wm Cameron Chumlea Journal: BMC Pediatr Date: 2016-11-14 Impact factor: 2.125