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This 70 item test asks about usual eating habits in the past year as well as about multivitamin supplementation, from which vitamin D dietary intake is calculated.
Binary item test by Fisher's Exact 2-tail.
The TOFHLA is a timed 50-item reading comprehension and 17-item numeracy item test.
In fact some variance is desirable in a multi item test.
The corrected item test correlations are above the critical value of 0.3 for all items.
In order to maintain a relatively short administration time in this context, one or more 50 item test forms will be compiled and administered in place of the current 40 item test form as a next step.
Similar(46)
Item test-retest reliability was assessed for each item using weighted Kappa, applying quadratic weighting [ 53].
Forty items (45%) met the criteria for acceptable item test-retest reliability.
The CaSUN was found to have good acceptability, internal consistency and face, content and construct validity; however item test-retest was low [ 27].
Chi-square statistics for individual item test-of-fit were not significant (p > 0.05) in 12 items; one item with p = 0.005.
The SUNS was found to have high acceptability, item test-retest reliability, internal consistency and face, content and construct validity [ 28].
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com