PMID: 8948132Oct 25, 1996Paper

Are convenience DNA samples significantly different?

Forensic Science International : Synergy
W K Fung

Abstract

In this paper, the issue of whether DNA databases collected by different convenience sampling methods are significantly different statistically is investigated. Testing the null hypothesis that the population probability or frequency distributions of DNA profiles under different sampling methods are the same is of interest in this investigation. Some statistical analyses are conducted on the single-locus VNTR databases collected from different sources by the Hong Kong Government Laboratory. The bootstrap, Monte Carlo simulation and significance tests including the Pearson's chi-squared, likelihood ratio, and Kolmogorov-Smirnov two-sample statistics are employed for testing the hypothesis. The results are promising that no probability values of the tests are smaller than 5%. In other words, there is not enough evidence to reject the null hypothesis at the 5% level, which provides more confidence for using the VNTR reference databases commonly collected by convenience sampling.

References

Jun 14, 1996·Forensic Science International : Synergy·P Tsui, D M Wong

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Citations

Jun 29, 1999·Analytical Chemistry·T A BrettellR Saferstein

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