Function for Interrater Reliability.
Arguments
- data
The data as a data frame. The data should be in long format, where each row is a unique observation.
- vars
A string naming the variable from
datathat contains the diagnosis given by the observer, variable can be categorical or ordinal.- sft
Boolean selection whether to show frequency table. Default is 'false'. If 'true', the function will show frequency table for each observer.
- wght
A list for the argument weight (wght), for weighted kappa analysis. Default is 'unweighted'. 'squared' or 'equal' should be selected only with ordinal variables. The function gives error if the variable type is not ordinal. The default is 'unweighted'.
- exct
Boolean selection whether to use exact kappa. Effects only more than 3 observers. Default is 'false'.
Value
A results object containing:
results$irrtable | a table | ||||
results$text2 | a html | ||||
results$text | a preformatted |
Tables can be converted to data frames with asDF or as.data.frame. For example:
results$irrtable$asDF
as.data.frame(results$irrtable)