The 1998 version performed best with 84.8% of estimates within 20% of actual weight.DiscussionThis study is the first to compare paediatric weight estimation methods in Rwanda. All editions of the Broselow Tape performed better than age-based rules. Both were better than other age-based formulae (69% of estimates within 20% of actual weight). This formula and the original Advanced Paediatric Life Support formula (weight = + 8) performed similarly. The derived Rwanda Rule was: weight (kg) = + 8. Weight estimations were then compared with actual weight using Bland-Altman analysis, and the proportions of estimates within 10 and 20% of actual weight.ResultsThere were 327 children included in the study. Linear regression was used to derive a new age-based weight estimation formula, the Rwanda Rule. Weights were estimated using four versions of the Broselow Tape and several age-based formulae. This study aimed to compare the accuracy of various weight estimation methods and to derive a dedicated age-based tool within a Rwandan setting.MethodsThis was a retrospective study using age, weight and height data from randomly selected charts of Rwandan children, aged between one and ten years, who attended the paediatric emergency centre, Centre Hospitalier Universitaire de Kigali, Rwanda. The most common methods for paediatric weight estimation are based on height or age. However, knowledge of the weight is often unavailable as the urgency of the situation may impede measurement. IntroductionMost drugs, fluids and ventilator settings depend on the weight of a paediatric patient.
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