• Resuscitation · Nov 2018

    Validation of the mid-arm-based weight estimation formula (the Cattermole formula) for Korean children.

    • Jea Yeon Choi, Dongbum Suh, Kim Do Kyun DK Department of Emergency Medicine, Seoul National University Hospital, Seoul, Republic of Korea. Electronic address: birdbeak@snuh.org., Young Ho Kwak, Jae Yun Jung, Lee Jin Hee JH Department of Emergency Medicine, Seoul National University Bundang Hospital, Gyeonggido, Republic of Korea., Jin Hee Jeong, Hyuksool Kwon, and So Hyun Paek.
    • Department of Emergency Medicine, Gachon University Gil hospital, Incheon, Republic of Korea.
    • Resuscitation. 2018 Nov 1; 132: 13-16.

    BackgroundA mid-arm circumference-based weight estimation formula has recently been proposed. The Cattermole formula, which is suggested for children aged 1-11 years, is calculated as (mid-arm circumference in cm - 10) × 3 kg. The objective of this study was to externally validate the Cattermole formula using a Korean national survey database.MethodsThe data collected from a national survey conducted in 2005 by the Korean Pediatric Society included body weight, height, age and mid-arm circumference. To determine whether the Cattermole formula accurately predicted the actual weights of Korean children, we compared the performance of the Cattermole formula with those of other age-based and height-based weight estimation methods.ResultsA total of 91,147 children aged 1-11 years were assessed for eligibility. The mean age was 5.3 years, and 52.6% of the children were boys. The mean measured weight was 22.4 kg, and the mean mid-arm circumference was 17.9 cm. The Cattermole formula resulted in a mean difference of 1.35 kg and a mean percentage error of 11.5% with 95% limits of agreement of -8.1 to +10.8. A total of 37.9% of the estimates were within 10% of the measured weights.ConclusionAcross all ages, the Cattermole formula was not more accurate than the other methods. However, in children older than 6 years, the Cattermole formula results were more accurate than those of the age-based formulae with the exception of the Broselow tape.Clinical Trial RegistrationNone.Copyright © 2018 Elsevier B.V. All rights reserved.

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