Asthma Symptom Utility Index (ASUI)
Name of questionnaire | Asthma Symptom Utility Index (ASUI) |
Type of questionnaire-description | A brief, interviewer-administered, patient preference-based scale assessing frequency and severity of selected asthma-related symptoms and treatment side effects, for use in clinical trials and cost-effectiveness studies in asthma. |
Number of items | 11 items, with 2-week recall |
Number of domains & categories | Items not separated in specific domains, assesses four symptoms (cough, wheeze, shortness of breath, and awakening at night) and medication side-effects each on two dimensions (frequency and severity). |
Name of categories/domains | as above |
Scaling of items | 4-point Likert scale to assess frequency (not at all, 1 to 3 days, 4 to 7 days, and 8 to 14 days) and severity (not applicable, mild, moderate and severe) |
Scoring available: with permission or free | Scores range from 0 (worst possible symptoms) to 1 (no symptoms) |
Test-retest reproducibility | Yes, intraclass correlation coefficient was 0.74 |
Internal consistency | Yes |
Validity | Yes, compared with indicators of disease severity (medical history instrument, lung function, physician severity rating scale and Juniper asthma disease severity scale); -generic health utility (HUI Mark 2); and Asthma Quality of Life Questionnaire |
Minimally important difference | Not reported |
Language | English (US) |
Translations in other languages (if yes, then list the languages) | Italian, French |
Developer name | Dennis A. Revicki, PhD; Nancy Kline Leidy, PhD; Fiona Brennan-Diemer, BA; Sonja Sorensen, MPH; and Alkis Togias, MD |
Developer contact information | Dennis Revicki, PhD, Center for Health Outcomes Research MEDTAP International, Inc 7101 Wisconsin Ave, Suite 600 Bethesda, MD 20814, e-mail: Revicki@Medtap.com |
Availability of questionnaire: needs permission from developer, cost or freely available | Inquire with the author for permission to use this instrument |
References (original publication) | Revicki DA, Leidy NK, Brennan-Diemer F; Sorensen S and Togias, AM. Integrating Patient Preferences Into Health Outcomes Assessment: The Multiattribute Asthma Symptom Utility Index. Chest 1998; 114; 998-1007. |
Limitations | - |
Link to the questionnaire (if available) | NA |