NIST1036freqs {forensicpopdata} | R Documentation |
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.
Source
Raw data (public domain) on which the data set is based is listed as U.S. Population Dataset 1036 (NIST) on https://strbase.nist.gov
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. 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. 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"]