Differential item functioning (DIF) in the EORTC QLQ-C30: A comparison of baseline, on-treatment and off-treatment data

WEI-CHU CHIE2022-05-052022-05-0520090962-9343https://www.scopus.com/inward/record.uri?eid=2-s2.0-62349128062&doi=10.1007%2fs11136-009-9453-7&partnerID=40&md5=3d8df1b0b49b68f53356a8ff62eeadb9https://scholars.lib.ntu.edu.tw/handle/123456789/609854Differential item functioning (DIF) in the EORTC QLQ-C30: A comparison of baseline, on-treatment and off-treatment datajournal article10.1007/s11136-009-9453-7192478082-s2.0-62349128062