Figure 5
From: Implementing statistical equating for MRCP(UK) parts 1 and 2
The numbers of items in each diet of the MRCP(UK) Part 2 exam showing DIF at different levels of significance (see legend). The red box indicates the period during which Statistical equating was being used. Note that the numbers of items in the Part 2 exam increased in the earlier years, and DIF was only calculated for scoring items in the exam, and therefore numbers differ between diets.