filterhelp.md
In compareGroups: Descriptive Analysis by Groups

Write R code to select individuals.

Note the following symbols for certain logical expressions in R:

|Action | Symbol | Example | |:---------|:------:|:--------| |equals to | == | sex=="Male" | |less than | < | age < 60 | |greater than | > | age > 60 | |equals or less than | <= | age<=60 | |equals or greater than | >= | age>=60 | | and | & | age>=40 & age<=60 | | or | | | smoke=="Current" | smoke=="Former" | |not available | is.na() | is.na(p14) | | not | ! |

For example, to select women younger than 60 years old:

sex=="Female" & age<60

IMPORTANT: when applying a filter with this panel, all interactive selection throught little boxes below colnames of data set Panel on right side is ignored.