Purpose: This study aimed to document utility values and the Visual Analog Scale (VAS) with the 5-level version of the EQ-5D questionnaire in a large sample of patients with inflammatory bowel disease (IBD), including Crohn's disease (CD) and ulcerative colitis (UC).
Methods: QALY-MICI was a cross-sectional survey across three sources in France. Data were collected between 2019 and 2022 for patients 18 and over. The EQ-5D-5 L, the EQ-VAS, the Short Inflammatory Bowel Disease Questionnaire (SIBDQ), the Harvey-Bradshaw Index (HBI) for CD, and the Walmsley Index for UC (SCCAI) were collected.
Results: A total of 2,841 patients aged over 18 were recruited (1785 with CD, 1056 with UC). The mean age was 40.2 (SD 14.3). The time since diagnosis was 6 years and over for 61.9% of patients. The most impacted dimensions were usual activities, anxiety/ depression, and pain/ discomfort. The mean utility value was 0.863 (SD 0.172) versus 0.905 (SD 0.158) in the French population (p = 0.007). The mean VAS value was 68 (SD 19.2) versus 73.4 (SD 22.2) in the general population (p = 0.016). Utility values and VAS were similar for CD and UC and higher for men. There was a strong positive correlation between utility values, the VAS, and the SIBDQ score, and a negative correlation between the HBI and the SCCAI. The SIBDQ score and disease activity were the main predictors of utility and VAS.
Conclusion: The QALY-MICI is, to our knowledge, the first study documenting utility values and VAS using the EQ-5D-5 L questionnaire on a large sample, with a comparison to the general population.
Keywords: EQ-5D-5L; France; Inflammatory bowel disease; Utility values.
Cost-effectiveness analyses have become an important component of assessing new health technologies. They require robust evidence to measure Quality of Life Adjusted Life Year gains. The Euroqol EQ-5D questionnaire is the main standard.Data on its use in inflammatory bowel disease (IBD) with its latest version, EQ-5D-5L, are limited to small samples.This study aimed at estimating utility values for IBD patients on a large sample in France, analysing the relationship between specific IBD quality of life and disease activity indexes, and identifying the main factors impacting patients’ quality of life.A prospective, cross-sectional survey was designed amongst French IBD patients aged 18 and over from three sources (n=2,841) . Utility values for IBD patients were lower than those observed in the French general population across all age groups. Men declared higher values than women. There was no difference between patients with Crohn’s disease and those with ulcerative colitis. Patients with a quiescent disease had similar values to those of the general population.
© 2024. The Author(s), under exclusive licence to Springer Nature Switzerland AG.