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Tidy DLU form

tidy_dlu.Rd

Separate visit, form and question into different columns. Variable names, NOT the values, of the dlu data will be converted to lower cases.

Usage

tidy_dlu(x, clean_names = TRUE)

Arguments

x

DLU data

clean_names

Conver variable name to lower case (default). See clean_names for details.

Value

A data.frame with `visit/form/question` column separated into `visit`, `form` and `question` column.

Details

The DLU file contains four columns:

  • shortcode: Variable name of the downloaded data.

  • visit/form/question: Contains visit, form and question. It is separated by a slash. This function will separate this column into `visit`, `form` and `question` column in the output dataset. The `question` column is the unique variable name for a particular CRF form.

  • description: description of the variable, namely variable label. This is will be used by apply_macro_dict to create variable label.

  • type: type of the variable, it has IntegerData, Text, Date, Real and Category four categories. This will be used by apply_macro_dict to convert variables to corresponding type.

See also

apply_macro_dict read_data cttab report_missing clean_names