modelFormulaLR {PhenStat} | R Documentation

## Method "modelFormulaLR"

### Description

Creates formula for the start Mixed Model based on equation and number of sexes in the data.

### Usage

        modelFormulaLR(numberofsexes,
                   depVariable,
                   sexIncluded,
                   dimorphismIncluded,
                   IncludeBatch)

### Arguments

`numberofsexes` | a numerical value for levels of sex in the dataset (1 or 2); mandatory argument
`depVariable` | a character string defining the dependent variable of interest; mandatory argument
`sexIncluded` | include sex effect into formula or not; mandatory argument
`dimorphismIncluded` | include interaction effect of Genotype/Sex into formula or not; mandatory argument
`IncludeBatch` | include batch effect into formula or not; mandatory argument

### Value

Returns formula to use.

### Author(s)

Natalja Kurbatova, Natasha Karp, Jeremy Mason

### References

Karp N, Melvin D, Sanger Mouse Genetics Project, Mott R (2012): Robust and Sensitive Analysis of Mouse Knockout Phenotypes. PLoS ONE 7(12): e52410. doi:10.1371/journal.pone.0052410

West B, Welch K, Galecki A (2007): Linear Mixed Models: A practical guide using statistical software New York: Chapman & Hall/CRC 353 p.

### See Also

`PhenTestResult`

### Examples

        formula <- PhenStat:::modelFormulaLR(numberofsexes=2,
                depVariable="Lean.Mass",TRUE,TRUE,"No")

[Package PhenStat version 2.17.0 Index]