The MSATBtest
data set consists of the responses of 1,407 subjects (484 males, 923 females)
to multiple-choice admission test to medical school in Czech republic. It contains 20 selected items from original
test while first item was previously detected detected as differently functioning (Vlckova, 2014).
Possible answers were A, B, C, D, while any combination of these can be correct. The column gender
represents
gender of students, where 0 represents males (reference group) and 1 represents females (focal group).
data(MSATBtest)
A MSATBtest
data frame consists of 1,407 observations on the following 21 variables. The first 20
columns represent answers of subject to an items of the test. The 21st column is vector subjects' gender;
values 0 and 1 refer to males (reference group) and females (focal group).
Drabinova, A. & Martinkova P. (2017). Detection of Differential Item Functioning with NonLinear Regression: Non-IRT Approach Accounting for Guessing. Journal of Educational Measurement, 54(4), 498-517, https://doi.org/10.1111/jedm.12158.
Vlckova, K. (2014). Test and Item Fairness (Unpublished master's thesis).