title: Cross-cultural Psychometric Evaluation of the Dutch McGill-QoL Questionnaire for Breast Cancer Patients.
abstract: OBJECTIVE
  Assessing the cross-cultural psychometric properties of the Dutch-MQoL for breast cancer patients.
  
  
  METHODS
  26 patients were recruited at the Antwerp University Hospital. Eligible patients filled in the MQoL on different moments in time in order to evaluate clinimetric properties. To determine the validity; MQoL was correlated to the EORTC QLQ-C30. Internal consistency was analysed using Cronbach's and test-retest reliability was determined by ICC. For statistical responsiveness, S.E.M and MDC were calculated.
  
  
  RESULTS
  A strong correlation was found between the 'QoL score' of the MQoL and the domain 'existential well- being' of the EORTC QLQ-C30 (r = 0.72). An excellent test-retest reliability (ICC (1,1)) was demonstrated with intraclass coefficients ranging from 0.82 to 0.92. A MDC in total score of only 1.22 (12%) was seen, needed to detect a factual change within a patients' QoL. Psychometric properties of the Dutch MQoL were found comparable to the properties of the original questionnaire.
  
  
  CONCLUSIONS
  The Dutch version of the MQoL is a valid and reliable questionnaire for breast cancer patients and shows statistical responsiveness. Due to the strong to excellent reliability, this version of the MQoL is useful in clinical as well as scientific setting.
authors.affiliation: Department of Rehabilitation Sciences and Physiotherapy-MOVANT, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.|Department of Rehabilitation Sciences, Tervuursevest 101, box 1500, B-3001 Heverlee, Belgium.
authors.forename: T
authors.initials: T
authors.lastname: De Vrieze
authors.affiliation: Department of Rehabilitation Sciences and Physiotherapy-MOVANT, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
authors.forename: D
authors.initials: D
authors.lastname: Coeck
authors.affiliation: Department of Rehabilitation Sciences and Physiotherapy-MOVANT, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.|Multidisciplinary Breast Clinic, Antwerp University Hospital (UZA), Wilrijkstraat 10, 2650 Edegem, Belgium.
authors.forename: H
authors.initials: H
authors.lastname: Verbelen
authors.affiliation: Department of Rehabilitation Sciences, Tervuursevest 101, box 1500, B-3001 Heverlee, Belgium.
authors.forename: N
authors.initials: N
authors.lastname: Devoogdt
authors.affiliation: Multidisciplinary Breast Clinic, Antwerp University Hospital (UZA), Wilrijkstraat 10, 2650 Edegem, Belgium.|Department of Medicine, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
authors.forename: W
authors.initials: W
authors.lastname: Tjalma
authors.affiliation: Department of Rehabilitation Sciences and Physiotherapy-MOVANT, Faculty of Medicine and Health Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.|Multidisciplinary Breast Clinic, Antwerp University Hospital (UZA), Wilrijkstraat 10, 2650 Edegem, Belgium.
authors.forename: N
authors.initials: N
authors.lastname: Gebruers
keywords: Breast cancer; mcgill-qol questionnaire; reliability; validity