Calculates percentage of cases for provided variable and criteria specified in subset
argument. Function accepts numeric, factor and logical variables for x
parameter. If numeric and/or factor is provided, subsetting can be achieved via subset
argument. Depending on value of na.rm
argument, either valid (na.rm = TRUE
) or all cases (na.rm = FALSE
) are taken into account. By passing logical variable to x
, a sum of (TRUE
) elements is calculated instead, and valid percents are used (NA
are excluded).