Do low template DNA profiles have useful quantitative data?

Duncan Taylor, John Buckleton

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    A set of low template mixed DNA profiles with known ground truths was examined using software that utilised peak heights (STRmix™ V2.3) and an adapted version that did not use peak heights and mimicked models based on a drop-out probability [1,2] (known as semi-continuous or 'drop' models) (STRmix™ lite). The use of peak heights increased the LR when Hp was true in the vast majority of cases. The effect was most notable at moderate template levels but was also present at quite low template levels. There is no level at which we can say that height information is totally uninformative. Even at the lowest levels the bulk of the data show some improvement from the inclusion of peak height information.

    Original languageEnglish
    Pages (from-to)13-16
    Number of pages4
    JournalForensic Science International: Genetics
    Volume16
    DOIs
    Publication statusPublished - May 2015

    Keywords

    • Continuous models
    • DNA profile interpretation
    • Likelihood ratios
    • Low template
    • Mixtures

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