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The correct answer (item No. 3) was chosen by 83.7% of the sample.
end{aligned}Then O is the weighted proportion of students who correctly answer item j of subscale k, and t indicates whether O is consistent with the IRT model.
For the assessment of declarative knowledge, we asked, "State which method is used to determine the antibody titer in blood"., again with five choices and one correct answer (Item no. 19, Additional file 1).
The item with lowest percentage of positive answer (item 24th) also belongs to this safety factor.
Nearly a third of all patients did not answer item 27 "sexual intercourse".
The patients reported that they were embarrassed to answer Item IRT23 "My sexual activity is satisfactory".
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[55] Four patients did not answer items thinking of the specified 24-h recall period.
In GPAM-WATA, when examinees fail to answer items correctly, they obtain instructional prompts (IPs) in a graduated way.
Second, 'question and answer' items assess candidates' ability to understand statements or questions and to answer by choosing appropriate responses.
The majority of reading items on the GEPT-A were selected response but over a third were short answer items.
The response formats used on the two tests are also not comparable, most notably due to the extensive use of short answer items on the GEPT-A in contrast to the iBT which only uses multiple-choice answer items.
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