make_yes_no_unknown function

make_yes_no_unknown

Convert a "Yes-No", "True-False" or "Checkboxes (Multiple Answers)" question in REDCap to a factor holding "No" or "Yes" or "Unknown". Technically "yes" or "checked" (ignoring case), 1 or TRUE responses are converted to "Yes". "No" or "unchecked" (ignoring case), 0 or FALSE are converted to "No". All other values are set to "Unknown". Also see make_yes_no().

make_yes_no_unknown(x)

Arguments

• x: variable to be converted to hold "No", "Yes", or Unknown"

Returns

a factor with "No", "Yes", or Unknown"

Examples

make_yes_no_unknown(c(0, 1, NA))
make_yes_no_unknown(c("unchecked", "Checked", NA))