Parental Estimates of their child's weight: Accurate for resuscitation drug doses

Objective: The aim of this study was to assess parental reliability in estimating child body weight in emergency situations, when weighing the child is often impossible. Methods: 312 parents mere asked to complete an anonymous questionnaire that included estimating their child's weight. 233 questionnaires were enrolled in the study and were assessed statistically using Students t test, and chi(2) and ANOVA tests. Results: 51.5% of parents estimated their child's body weight within +/-5% of the true weight, 73.4% within +/-10%, and 87.5% within +/-20%. A significant difference was found between paternal and maternal estimations, with 56% of mothers and only 40.3% of fathers estimating within a 5% range of accuracy (P < 0.05). Conclusions: Parents, especially mothers, can estimate their child's body weight within clinically acceptable limits. These estimations can reliably be used to calculate drug doses in prehospital and emergency department situations, when children's weight is not known and cannot be measured.