SNPassoc (version 2.0-11)

Table.mean.se: Descriptive sample size, mean, and standard error

Description

This function computes sample size, mean and standard error of a quantitative trait for each genotype (or combination of genotypes)

Usage

Table.mean.se(var, dep, subset = !is.na(var))

Value

tp

A matrix giving sample size (n), median (me) and standard error (se) for each genotype

Arguments

var

quantitative trait

dep

variable with genotypes or any combination of them

subset

an optional vector specifying a subset of observations to be used in the descriptive analysis

See Also

Table.N.Per

Examples

data(SNPs)
# sample size, mean age and standard error for each genotype
Table.mean.se(SNPs$snp10001,SNPs$protein)

# The same table for a subset (males)
Table.mean.se(SNPs$snp10001,SNPs$protein,SNPs$sex=="Male")

# The same table assuming a dominant model
Table.mean.se(dominant(snp(SNPs$snp10001,sep="")),SNPs$protein,SNPs$sex=="Male")