Comparing Patient and Community Preferences for Health in Rheumatoid Arthritis
Author Information
Author(s): Rashidi Amir Adel, Anis Aslam H, Marra Carlo A
Primary Institution: University of British Columbia
Hypothesis
Do visual analogue scale (VAS) derived standard gamble (SG) utilities agree with Health Utilities Index utilities?
Conclusion
Patient and community preferences show moderate to strong agreement at the individual level, but significant differences at the group level.
Supporting Evidence
- Moderate to strong agreement was found between SG utilities and HUI2 and HUI3 utilities at the individual level.
- Significant differences were observed at the group level between SG and HUI utilities.
- VAS-derived utility scores are not good substitutes for HUI scores.
Takeaway
This study looked at how patients with rheumatoid arthritis rate their health compared to how the general public rates the same health conditions, finding that patients often rate their health higher.
Methodology
VAS and HUI scores were obtained from 320 rheumatoid arthritis patients, and agreement was assessed using intraclass correlation coefficients and paired t-tests.
Potential Biases
Potential biases include end-aversion bias and context bias in VAS measurements.
Limitations
The study compared different health states and did not estimate a power conversion specific to this study.
Participant Demographics
Participants were rheumatoid arthritis patients with a rheumatologist-confirmed diagnosis.
Statistical Information
Confidence Interval
0.45 (0.36 to 0.54) to 0.57 (0.49 to 0.64)
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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