Microarray Data Analysis Using BRB-ArrayTools Version 4.2.0 ...

Data filtering optionsGene filters: Gene quality• Missing value filter: Screens out genes whichcontain too many missing values over the set ofsamples• Percent absent filter: For Affymetrix data, canfilter out a probeset if too many expressionvalues had an Absent call• Minimum Intensity: This option is onlyavailable for single channel data. It filters outgenes whose 50 th percentile normalized logintensity is less than the log of the user definedvalue.67