Description Usage Format Details Examples
A dataset of observations on a normally distributed phenotype, generated with means conditional on genotype at the effect locus. All six family-types recognized in package RFGLS are represented.
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A data frame with 4050 observations on the following 6 variables:
FAMID
"Family ID." Each family in the dataset is uniquely identified by a value of FAMID
, which are all multiples of 10.
ID
Individual ID. Each subject in the dataset is uniquely identified by a value of ID
, which is equal to his/her INDIV
plus his/her FAMID
.
FTYPE
"Family-type." RFGLS recognizes six different family-types, five of which are, at largest, four-person nuclear families (two parents, two offspring), distinguished by how the two offspring are related to one another:
MZ-twin families,
DZ-twin families,
Adoptive-offspring families,
Non-twin bio-offspring families,
"Mixed" families with one bio and one adopted offspring, and
"Independent observations," who do not fit into a four-person nuclear family.
INDIV
"Individual code," which represents how a subject fits into his/her family: INDIV=1
is for "Offspring #1," INDIV=2
is for "Offspring 2," INDIV=3
is for the mother, and INDIV=4
is for the father. In families of FTYPE=5
, the biological offspring has INDIV=1
, and the adopted offspring, INDIV=2
. All "independent observations" (i.e., FTYPE=6
) have INDIV=1
. Note that individuals in a given family are ordered by their INDIV
.
Zscore
The phenotype score.
IsFemale
Binary indicator; a value of 1 indicates female sex. All offspring in families of type #2 (DZ twins) happen to be same-sex, but this is not a requirement.
Each family's phenotype scores were generated from a multivariate normal distribution (mvrnorm
in package mvtnorm) with a centroid defined conditional upon the family members' genotypes on the effect locus (rs7681769 in dataset geno
), and a variance matrix with 1s on its diagonal and covariances (really, correlations) consistent with an additive heritability of 0.5 and a shared-environmentality of 0.2, but zero assortative mating.
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