Home
This Title All WIREs
WIREs RSS Feed
How to cite this WIREs title:
WIREs Forensic Sci

A description of the likelihood ratios in the probabilistic genotyping software STRmix™

Full article on Wiley Online Library:   HTML PDF

Can't access this content? Tell your librarian.

Abstract Probabilistic methods of DNA profile interpretation are being adopted by forensic laboratories worldwide. One commonality to all probabilistic genotyping software is an assignment of the strength of evidence using the likelihood ratio (LR). The probabilistic genotyping software STRmix™ reports a number of LRs that differ based on the propositions considered and the level within the hierarchy of propositions considered. Within this paper, we describe the different LRs assigned in a STRmix™ software report. This article is categorized under: Forensic Biology > Interpretation of Biological Evidence Forensic Biology > Forensic DNA Technologies
Per locus likelihood ratio (LR) summary table for a two person mixture. The two columns labeled Pr(E| Hp) and Pr(E| Hd) present numbers that are not the actual probability indicated, which cannot be obtained by MCMC. The quoted numbers are, however, proportional to these probabilities by the unknown constant of proportionality, say, k. Although unknown, this constant appears in the numerator and denominator of the LR and hence cancels
[ Normal View | Magnified View ]
Summary of varNOC likelihood ratio (LR) with two subpopulations, stratified, relatives, and unified LRs
[ Normal View | Magnified View ]
Summary of likelihood ratio (LR) with two subpopulations, stratified and unified LRs
[ Normal View | Magnified View ]
Summary of likelihood ratio (LR) with two subpopulations and stratified LRs. The lower sub‐source LR (African American) is bolded. The children per family and population size are set to 0 so the unified LR is not assigned
[ Normal View | Magnified View ]
Summary of likelihood ratio (LR) table for a two person mixed DNA profile including relatives LRs
[ Normal View | Magnified View ]
Fabricated electropherogram of a single‐locus two person mixed DNA profile
[ Normal View | Magnified View ]

Browse by Topic

Forensic Biology > Forensic DNA Technologies
Forensic Biology > Interpretation of Biological Evidence

Access to this WIREs title is by subscription only.

Recommend to Your
Librarian Now!

The latest WIREs articles in your inbox

Sign Up for Article Alerts