Z-Transform Method for Pairwise Osteometric Pair-matching
| Autor: | Sachin Pawaskar, Julia D. Warnke-Sommer, Franklin E. Damann, Jeffrey James Lynch |
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| Rok vydání: | 2018 |
| Předmět: |
Male
Sorting algorithm Absolute value (algebra) Pair matching 01 natural sciences Bone and Bones Pathology and Forensic Medicine 010104 statistics & probability 03 medical and health sciences 0302 clinical medicine Statistics Genetics Humans 030216 legal & forensic medicine 0101 mathematics Remainder Mathematics Models Statistical Receiver operating characteristic Contrast (statistics) Reproducibility of Results Z-transform ROC Curve Forensic Anthropology Pairwise comparison Female Software |
| Zdroj: | Journal of forensic sciences. 64(1) |
| ISSN: | 1556-4029 |
| Popis: | A new pairwise osteometric pair-matching approach based on the Z-transform method is presented. In contrast to previous methods that perform a global t-test on the summed skeletal element pair measurement distances, this approach performs t-tests on each individual distance, facilitating the capture of measurement-specific variation. This new approach is compared to published pairwise sorting methods using a standard reference dataset of postcranial remains maintained by the Defense POW/MIA Accounting Agency. Receiver operating characteristic curve analysis indicates significantly improved performance for the clavicle and radius over all previous methods (p < 0.01). The z-transform method weighted by the effect size outperformed the t-test (Byrd and Adams) and the mean t-test (Lynch) for all elements (p < 0.01). The method performed better than the absolute value t-test (Lynch) for five elements (p < 0.01) and performed at least as well for the remainder. To facilitate usability all methods are available at: https://github.com/spawaskar-cora/z-transform-method. |
| Databáze: | OpenAIRE |
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