Sentence examples for item difference from inspiring English sources
The MCID was calculated for those patients who, at visit at 6 months, declared changes "slightly better" in the general health status item (difference between the scores from baseline and the visit at 6 months).
Met and unmet needs were assessed at a case-by-case level for each of the 15 items, and were identified by dichotomising the item difference scores as follows: Met (or exceeded) Needs: NPCS-Gets ≥ NPCS Needs.
Participants' scales were arranged from the highest total score to the lowest, and the top 27% and the last 27% were selected as the extreme groups which were analyzed by the independent-sample t-test to identify item difference.
Furthermore, individual and item differences could be explained substantially by the test-taker's educational attainment, language, and cognitive skill level, and by the item's difficulty and position.
The present study used a model-based approach to provide empirical evidence that disengaged responding in the large-scale assessment PIAAC can be explained by individual and item differences.
Across participant differences were analysed with repeated measures ANOVAs or paired t-tests; across item differences were analysed with one-way ANOVAs.
To examine face validity, we compared SRQ-20 items with ASCL items qualitatively, identifying parallel content and item differences.
For subspecialty fellows, item differences were seen in equipment maintenance and food on-call, with procedural fellows expressing lower satisfaction.
Under CTT, item differences are ignored and sum-scores have a common measurement error variance across subjects.
While these studies demonstrate the use of IRT to examine item difficulty and discrimination the investigation of item differences has also been addressed using classical test theory (CTT).
To investigate whether there were indications of item differences due to the presence or absence of pictograms The data are part of a longitudinal, population-based questionnaire study.
