Related Experiment Videos
Development and preliminary validation of the multiattribute Rhinitis Symptom Utility Index.
D A Revicki1, N K Leidy, F Brennan-Diemer
1Center for Health Outcome Research, MEDTAP International, Inc., Bethesda, MD 20814, USA. Revicki@Medtap.com
Summary
The Rhinitis Symptom Utility Index (RSUI) measures allergic rhinitis symptoms. This brief tool shows reliability and validity for clinical trials and cost-effectiveness studies.
Area of Science:
- Allergy and Immunology
- Health Outcomes Research
- Psychometrics
Background:
- Allergic rhinitis significantly impacts quality of life.
- Existing measures may not fully capture patient preferences.
- A need exists for brief, preference-based rhinitis outcome measures.
Purpose of the Study:
- To develop and validate the Rhinitis Symptom Utility Index (RSUI).
- To assess the RSUI's reliability, validity, and utility in allergic rhinitis patients.
- To evaluate the RSUI's potential use in clinical and economic evaluations.
Main Methods:
- Developed a 10-item Rhinitis Symptom Utility Index (RSUI) based on patient preferences.
- Conducted a cross-sectional survey of 100 adults with allergic rhinitis.
- Collected data on rhinitis severity, RQLQ, and HUI2 for validation.
Main Results:
- The RSUI demonstrated acceptable reliability and validity.
- The mean RSUI score was 0.72 (range 0.15-1.0).
- RSUI correlated significantly with physician ratings, HUI2, and RQLQ.
Conclusions:
- The RSUI is a brief, easy-to-administer measure of rhinitis symptoms.
- Its reliability and validity support its use in clinical trials.
- The RSUI is suitable for cost-effectiveness studies of rhinitis treatments.