![]() ![]() Written informed consent was obtained from parents and written assent was obtained from children over the age of 7 years. Permission to conduct the original studies as well as the secondary data analysis was obtained from the Human Research Ethics Committee of the University of the Witwatersrand. ![]() This was an analysis of pooled data from three previous studies evaluating various weight estimation systems, including the BT ( 11, 18, 21). ![]() The accuracy of the BT as a drug-dosing and weight-estimation device can be substantially improved by including an appraisal of body habitus in the methodology. The best weight-estimation model improved accuracy from 59.4 to 81.9% and reduced critical errors from 11.8 to 1.9%. The best dosing model improved dosing accuracy (doses within 10% of correct dose) from 52.0 to 69.6% and reduced critical dosing errors from 16.5 to 4.3%. Five dosing and four weight-estimation models were identified that markedly improved dosing and weight estimation accuracy, respectively. The habitus-modified method suggested by the manufacturer did not improve the accuracy of the BT. Sixteen a priori models generated a modified weight estimation or drug dose based on the BT weight and a gestalt assessment of habitus. MethodsĪ post hoc analysis of prospectively collected data from four hospitals in Johannesburg, South Africa, on a population of 1,085 children. This study evaluated the ability of habitus-modified models to improve the accuracy thereof. The manufacturers have suggested that a visual assessment of habitus may be used to increase its performance. The Broselow tape (BT) has been shown to estimate weight poorly primarily because of variations in body habitus. ![]()
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