• Detailed statistical analysis plan for the Danish Palliative care trial (DanPaCT) 

      Johnsen, Anna T; Petersen, Morten A; Gluud, Christian; Lindschou, Jane; Fayers, Peter; Sjøgren, Per; Pedersen, Lise; Neergaard, Mette A; Vejlgaard, Tove Bahn; Damkier, Anette; Nielsen, Jan B; Strömgren, Annette S; Higginson, Irene J; Groenvold, Mogens (Journal article; Peer reviewed, 2014)
      Background Advanced cancer patients experience considerable symptoms, problems, and needs. Early referral of these patients to specialized palliative care (SPC) could offer improvements. The Danish Palliative Care Trial ...
    • Differential item functioning (DIF) analyses of health-related quality of life instruments using logistic regression 

      Scott, Neil W; Fayers, Peter; Aaronson, Neil K; Bottomley, Andrew; de Graeff, Alexander; Groenvold, Mogens; Gundy, Chad; Koller, Michael; Petersen, Morten A; Sprangers, Mirjam AG (Journal article; Peer reviewed, 2010)
      Background: Differential item functioning (DIF) methods can be used to determine whether different subgroups respond differently to particular items within a health-related quality of life (HRQoL) subscale, after allowing ...
    • The EORTC CAT Core - The computer adaptive version of the EORTC QLQ-C30 questionnaire 

      Petersen, Morten Aa.; Aaronson, Neil K.; Arraras, Juan I; Chie, Wei-Chu; Conroy, Thierry; Costantini, Anna; Dirven, Linda; Fayers, Peter; Gamper, Eva-Maria; Giesinger, Johannes M; Habets, Esther J.J.; Hammerlid, Eva; Helbostad, Jorunn L.; Hjermstad, Marianne Jensen; Holzner, Bernhard; Johnson, Colin; Kemmler, Georg; King, Madeleine T.; Kaasa, Stein; Loge, Jon Håvard; Reijneveld, Jaap C.; Singer, Susanne; Taphoorn, Martin J. B.; Thamsborg, Lise H.; Tomaszewski, Krzysztof A.; Velikova, Galina; Verdonck-de Leeuw, Irma M.; Young, Teresa; Groenvold, Mogens (Journal article; Peer reviewed, 2018)
      Background To optimise measurement precision, relevance to patients and flexibility, patient-reported outcome measures (PROMs) should ideally be adapted to the individual patient/study while retaining direct comparability ...