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In an item bank, different subgroups – in this case diagnosis – can have different items but still be compared on the latent trait under investigation, given that there are some common items (unbiased for DIF) to effect the linkage [ 40, 41].
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Elsewhere, several instruments are identically named but have different item content: for instance, the term "frailty index" was used by different researchers [ 34, 43, 54].
Finally, we did not include physical activity as a potential confounder because KNHANES IV and KNHANES V had different items of measurement.
In addition, 26 items were removed because they had different item parameters for different groups of respondents.
"Often times I find couples have different ideas of where an item 'belongs' within the home.
Jobs have different clothing items you should wear, and there is also stuff to wear that give you special abilities from the job section in the clothing catalog.
Sex-gender bias can occur because females and males interpret items differently, have different roles/expectations with respect to the item content or because items represent a different physiologic load based on sex-based differences.
Different items have different counters.
We report results from two versions of the CBCL administered at two different ages; the two versions have different numbers of items and distributions of scores.
Yet, it is important to keep in mind that the items have different weights and that the physical items are also included when computing the MCS score.
The pain and function subscales of the KOOS and SF-36 measures hold different number of items, and the different items may have different numbers of response options.
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CEO of Professional Science Editing for Scientists @ prosciediting.com