Abstract
Objectives To quantify the health-related quality of life (HRQoL) of patients with bladder cancer around the time of diagnosis and to test the hypotheses of a two-factor model for the HRQoL questionnaire QLQ-C30. Methods From participants in the Bladder Cancer Prognoses Programme, a multicentre cohort study, sociodemographic data were collected using semi-structured face-to-face interviews. Answers to the QLQ-C30 were transformed into a scale from 0 to 100. HRQoL data were analysed in multivariate analyses. The hypothesized two-factor (Physical and Mental Health) domain structure of the QLQ-C30 was also tested with confirmatory factor analyses (CFA). Results A total of 1160 participants (78%) completed the questionnaire after initial visual diagnosis and before pathological confirmation. Despite non-muscle-invasive bladder cancer (NMIBC) being associated with a higher HRQoL than carcinoma invading bladder muscle, only the domain Role Functioning was clinically significantly better in patients with NMIBC. Age, gender, bladder cancer stage and comorbidity all had a significant influence on QLQ-C30 scores. The CFA showed an overall good fit of the hypothesized two-factor model. Conclusion This study identified a baseline reference value for HRQoL for patients with bladder cancer, which allows better evaluation of any changes in HRQoL as disease progresses or after treatment. In addition, a two-factor (Physical and Mental Health) model was developed for the QLQ-C30.
Original language | English |
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Pages (from-to) | 984-991 |
Number of pages | 8 |
Journal | BJU International |
Volume | 124 |
Issue number | 6 |
DOIs | |
Publication status | Published - Dec 2019 |
Keywords
- quality of life
- time of diagnosis
- cohort study
- QLQ-C30 questionnaire
- #BladderCancer
- #blcsm
- EUROPEAN-ORGANIZATION
- UROTHELIAL CARCINOMA
- EORTC QLQ-C30
- STAGE
- IMPACT
- QUESTIONNAIRE
- PROGRESSION
- ASSOCIATION
- RECURRENCE
- RISK