forensicpopdata (version 1.0.4)

NIST1036freqs: NIST 1036 Allele Frequency Data for 29 STR Loci

Description

A dataset containing allele frequencies for 29 autosomal STR loci from the NIST 1036 U.S. Population dataset. Frequencies are provided for four population groups: African American (AfAm), Asian (Asian), Caucasian (Cauc), and Hispanic (Hisp).

Usage

NIST1036freqs

Format

A named list of length 4:

AfAm

African American allele frequencies

Asian

Asian allele frequencies

Cauc

Caucasian allele frequencies

Hisp

Hispanic allele frequencies

Each element is itself a named list of 29 STR loci, with named numeric vectors of allele frequencies.

Details

This dataset is based on the revised genotypes from 2017. The 2017 revision incorporates some changes to the dataset from Hill et al. (2013). Details are provided in the referenced NIST presentation explaining revisions (2017) and Steffen et al. (2017).

Each population group is a named list of 29 elements, where each element corresponds to a specific STR locus (e.g., D3S1358, vWA, FGA, etc.). Each locus is represented as a named numeric vector:

• Names: allele values (as character strings, e.g., "12", "14.2")

• Values: allele frequencies for that population group

An attribute "N" is attached to each population list, specifying the sample size (number of alleles) for each locus.

References

Hill, C. R., Duewer, D. L., Kline, M. C., et al. (2013). U.S. population data for 29 autosomal STR loci. Forensic Sci. Int. Genet. 7:e82–e83. tools:::Rd_expr_doi("10.1016/j.fsigen.2012.12.004")

Steffen, C. R., Coble, M. D., Gettings, K. B., et al. (2017). Corrigendum to "U.S. Population Data for 29 Autosomal STR Loci" [Forensic Sci. Int. Genet. 7 (2013) e82–e83]. Forensic Sci. Int. Genet. 31:e36–e40. tools:::Rd_expr_doi("10.1016/j.fsigen.2017.08.011")

NIST presentation explaining revisions (2017): https://strbase.nist.gov/NIST_Resources/Population_Data/Vallone-Error-Management-July-25-2017.pdf

Examples

# Access allele frequencies for D3S1358 in African American population
NIST1036freqs$AfAm$D3S1358

# Frequency of allele "15" at D3S1358 in Caucasian population
NIST1036freqs$Cauc$D3S1358["15"]