Skip to main content

Table 5 DIF methods on the course 3.MatSelx

From: Defining and measuring completion and assessment biases with respect to English language and development status: not all MOOCs are equal

Method Original model MH Logistic
Number of items in Model 36 35 33
Number of removed items (%) 1 (3%) 3 (8%)
Mean ability for developed 0.03 0.02 0.01
Mean ability for developing − 0.46 − 0.48 − 0.44
Difference between means (%) 0.49 0.5 (102%) 0.45 (92%)