TitleOn the effect of adding clinical samples to validation studies of patient-reported outcome item banks: a simulation study
Publication TypeJournal Article
Year of Publication2016
AuthorsSmits, N
JournalQuality of Life Research
Volume25
Number7
Pagination1635–1644
ISSN1573-2649
AbstractTo increase the precision of estimated item parameters of item response theory models for patient-reported outcomes, general population samples are often enriched with samples of clinical respondents. Calibration studies provide little information on how this sampling scheme is incorporated into model estimation. In a small simulation study the impact of ignoring the oversampling of clinical respondents on item and person parameters is illustrated.
URLhttps://doi.org/10.1007/s11136-015-1199-9
DOI10.1007/s11136-015-1199-9