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The study aimed to further evaluate the psychometric properties of one recently developed oral health related quality of life (OHRQoL) instrument (PedsQL Oral Health Scale), including student self-report and parent-proxy report. Specifically, we tested the item validity,threshold order, local dependency, and differential item functioning (DIF) across gender and rater.

health promotion perspectives

Rasch analysis of the Persian version of PedsQL<sup>TM</sup>Oral Health Scale: further psychometric evaluation on item validity including differential item functioning

Rasch analysis of the Persian version of PedsQLTMOral Health Scale: further psychometric evaluation on item validity including differential item functioning

Rasch analysis of the Persian version of PedsQL^TMOral Health Scale: further psychometric evaluation on item validity including differential item functioning