The Value of Body Weight Measurement to Assess Dehydration in Children

Isabelle Pruvost, François Dubos, Emmanuel Chazard, Valérie Hue, Alain Duhamel and Alain Martinot

PLOS ONE, 2013, vol. 8, issue 1, 1-6

Abstract: Dehydration secondary to gastroenteritis is one of the most common reasons for office visits and hospital admissions. The indicator most commonly used to estimate dehydration status is acute weight loss. Post-illness weight gain is considered as the gold-standard to determine the true level of dehydration and is widely used to estimate weight loss in research. To determine the value of post-illness weight gain as a gold standard for acute dehydration, we conducted a prospective cohort study in which 293 children, aged 1 month to 2 years, with acute diarrhea were followed for 7 days during a 3-year period. The main outcome measures were an accurate pre-illness weight (if available within 8 days before the diarrhea), post-illness weight, and theoretical weight (predicted from the child’s individual growth chart). Post-illness weight was measured for 231 (79%) and both theoretical and post-illness weights were obtained for 111 (39%). Only 62 (21%) had an accurate pre-illness weight. The correlation between post-illness and theoretical weight was excellent (0.978), but bootstrapped linear regression analysis showed that post-illness weight underestimated theoretical weight by 0.48 kg (95% CI: 0.06–0.79, p

Date: 2013
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0055063

DOI: 10.1371/journal.pone.0055063

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