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The “somatic cell mutant frequencies at the hprt locus of the X-chromosome” in healthy children
data(mutantfreq)A data frame with 49 observations on the following 5 variables.
Donorthe donor identifier; a factor
Sexthe sex of the child;
a factor with levels F (females) or M (males)
Agethe age of the child in completed years; a numeric vector
Ceffthe mean unselected cloning efficiency; a numeric vector
Mfreqthe mutant frequencies
In the original paper,
the children are sometimes referred to as belonging to Group II (Ages 0 to 5),
Group III (Ages 6 to 11) or Group IV (Ages 12 to 17).
(Group I refers to cord data referenced to another article.)
Age may be treated as categorical with these categories.
data(mutantfreq)
summary(mutantfreq)
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