Department of Emergency Medicine, Gachon University Gil hospital, Incheon, Republic of Korea.
Department of Emergency Medicine, Seoul National University Bundang Hospital, Gyeonggido, Republic of Korea.
Resuscitation. 2018 Nov;132:13-16. doi: 10.1016/j.resuscitation.2018.08.026. Epub 2018 Aug 27.
A 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.
The 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.
A 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.
Across 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.
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最近提出了一种基于中臂围的体重估计公式。适用于 1-11 岁儿童的卡特莫尔公式的计算方法为（中臂围的厘米数-10）×3 公斤。本研究的目的是使用韩国国家调查数据库对外验证卡特莫尔公式。
本研究的数据来自韩国儿科学会于 2005 年进行的一项全国性调查，包括体重、身高、年龄和中臂围。为了确定卡特莫尔公式是否能准确预测韩国儿童的实际体重，我们比较了卡特莫尔公式与其他基于年龄和基于身高的体重估计方法的性能。
共有 91147 名 1-11 岁的儿童符合入选标准。平均年龄为 5.3 岁，其中 52.6%的儿童为男性。平均测量体重为 22.4 公斤，平均中臂围为 17.9 厘米。卡特莫尔公式的平均差值为 1.35 公斤，平均百分比误差为 11.5%，95%一致性界限为-8.1 至+10.8。共有 37.9%的估计值与实测体重相差 10%以内。
在所有年龄段，卡特莫尔公式都不如其他方法准确。然而，在 6 岁以上的儿童中，卡特莫尔公式的结果比基于年龄的公式更准确，除了 Broselow 带。
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