iversity Teaching Hospital in Lusaka, Zambia, to compare the Lusaka formula’s performance to commonly used weight prediction tools and to assess the nutritional status of this population. METHODS: The Lusaka formula (weight = [age in months/2] + 3.5 if under 1 year; weight = 2×[age in years] + 7 if older than 1 year) was derived from a previously published data set. We aimed to validate this formula in a new data set. Weights, heights, and ages of 330 children up to 14 years were measured before surgery. Accuracy was examined by comparing the (1) mean percentage error and (2) the percentage of actual weights that fell between 10% and 20% of the estimated weight for the Lusaka formula, and for other existing tools. World Health Organization (WHO) growth charts, mid upper arm circumference (MUAC), and body mass index (BMI) were used to assess nutritional status. RESULTS: The Lusaka formula had similar precision to the Broselow tape: 160 (48.5%) vs 158 (51.6%) children were within 10% of the estimated weight, 241 (73.0%) vs 245 (79.5%) children were within 20% of the estimated weight. The Lusaka formula slightly underestimated weight (mean bias, −0.5 kg) in contrast to all other predictive tools, which overestimated on average. Twenty-two percent of children had moderate or severe chronic malnutrition (stunting) and 4.7% of children had moderate or severe acute malnutrition (wasting). CONCLUSIONS: The Lusaka formula is comparable to, or better than, other age-based weight prediction tools in children presenting for surgery at the University Teaching Hospital in Lusaka, Zambia, and has the advantage that it covers a wider age range than tools with comparable accuracy. In this population, commonly used aged-based prediction tools significantly overestimate weights....

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卢萨卡公式的验证：赞比亚接受手术的儿童体重估计新公式

赞比亚卢萨卡的大学教学医院，将卢萨卡公式的性能与常用的体重预测工具进行比较，并评估该人群的营养状况。方法：卢萨卡公式（体重 = [年龄/2] + 1 岁以下为 3.5；体重 = 2×[岁数] + 1 岁以上为 7）来自先前公布的数据集。我们旨在在新数据集中验证此公式。在手术前测量了 330 名 14 岁以下儿童的体重、身高和年龄。通过比较 (1) 平均百分比误差和 (2) Lusaka 公式和其他现有工具的估计重量的 10% 到 20% 之间的实际重量百分比来检查准确性。世界卫生组织 (WHO) 增长图表，中上臂围 (MUAC)，和体重指数（BMI）用于评估营养状况。结果：卢萨卡公式与 Broselow 胶带具有相似的精确度：160 (48.5%) 名儿童与 158 名 (51.6%) 儿童在估计体重的 10% 以内，241 (73.0%) 名儿童与 245 (79.5%) 名儿童在 20% 以内的估计重量。与平均高估的所有其他预测工具相比，卢萨卡公式略微低估了体重（平均偏差，-0.5 kg）。22% 的儿童患有中度或重度慢性营养不良（发育迟缓），4.7% 的儿童患有中度或重度急性营养不良（消瘦）。结论：在赞比亚卢萨卡大学教学医院接受手术的儿童中，卢萨卡公式与其他基于年龄的体重预测工具相当或更好，并且具有比具有可比精度的工具覆盖更广泛的年龄范围的优势。在这个人群中，常用的基于年龄的预测工具显着高估了权重......