recode_nr function

Recognize and recode not-reached responses

recode_nr() function recognizes and recodes not-reached responses, i.e., missing responses to items such that all subsequent items are missed as well by the respondent.

recode_nr(Data, nr_code = 99, df)

Arguments

• Data: matrix or data.frame: object to be recoded, must include only items columns and no additional information
• nr_code: single character, integer or numeric: specifying how should be recognized not-reached responses coded (default is 99)
• df: deprecated. Use argument Data instead.

Returns

A data.frame object.

Examples

HCImissed <- HCI[, 1:20]

# simulate skipped (missed) and not-reached items in HCI dataset
set.seed(4211)
for (i in 1:150) {
  # not-reached (minimum at 10th item, maximum at 20th)
  HCImissed[sample(1:nrow(HCImissed), 1), seq(sample(10:20, 1), 20)] <- NA

  # missed with random location
  HCImissed[sample(1:nrow(HCImissed), 1), sample(1:20, 1)] <- NA
}

summary(HCImissed)

HCImissedNR <- recode_nr(HCImissed, nr_code = 99)
head(HCImissedNR)
summary(HCImissedNR)

See Also

ItemAnalysis()

Author(s)

Jan Netik

Institute of Computer Science of the Czech Academy of Sciences

netik@cs.cas.cz

Patricia Martinkova

Institute of Computer Science of the Czech Academy of Sciences

martinkova@cs.cas.cz