ccTable_filter_categories | R Documentation |
Categorical variables only allow a set of values to appear in the variable . Due to various reasons, a categorical variable may contain values that are not standard. The allowed values can be set in the YAML configuration while initialising the ccTable (see ccTable-class, create_cctable). In the following example, we can see how to set up the categorical filter for the variable dead_icu (NIHR_HIC_ICU_0097) which only allows its value to be A, D, E.
## Not run: # Example for categorical filter setup in the YAML configuration NIHR_HIC_ICU_0097: category: levels: A: Alive D: Dead E: Alive - not discharged apply: drop_entry # Run the filter on ccTable ct ct$filter_categories() # run the filter ct$apply_filters() # apply the filter and create the clean table ## End(Not run)
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