An Improved Method for Developing Injury Risk Curves Using the Brier Metric Score. Ann Biomed Eng 2021 Nov;49(11):3091-3098
Date
11/22/2020Pubmed ID
33219439DOI
10.1007/s10439-020-02686-8Scopus ID
2-s2.0-85096379124 (requires institutional sign-in at Scopus site) 4 CitationsAbstract
Many injury metrics are routinely proposed from measured or derived quantities from biomechanical experiments using post mortem human subjects (PMHS). The existing literature did not provide guidance on deciding between parameters collected in an experiment that would be best to use for the development of human injury probability curves (HIPC). The objective of this study was to use the Brier Metric Score (BMS) to identify the most appropriate metric from an experiment that predicts injury outcomes. The Brier Metric Score assesses how well a metric predicts the outcome for a censored data point (a lower BMS is better). Survival analysis was then conducted with the selected metric and the best distribution was selected using Akaike information criterion (AIC). Confidence intervals (CIs) and the normalized confidence interval width (NCIS) were calculated for the injury probability curve. The testing and validation of the methods described were performed using biomechanics data in the open literature. The methods for the HIPC development procedure detailed herein have been rigorously tested and used in the generation of WIAMan HIPCs and Injury Assessment Reference Curves (IARCs) for the WIAMan ATD, but can also be used in other ATD or PMHS injury risk curve development.
Author List
Hostetler ZS, Hsu FC, Yoganandan N, Pintar FA, Banerjee A, Voo L, Gayzik FSAuthors
Anjishnu Banerjee PhD Associate Professor in the Institute for Health and Equity department at Medical College of WisconsinFrank A. Pintar PhD Chair, Professor in the Biomedical Engineering department at Medical College of Wisconsin
Narayan Yoganandan PhD Professor in the Neurosurgery department at Medical College of Wisconsin
MESH terms used to index this publication - Major topics in bold
Biomechanical PhenomenaCadaver
Humans
Manikins
Military Personnel
Risk
Survival Analysis
Wounds and Injuries
