Scale Overview & Construct
4-item ultra-brief form measuring asthma-specific quality of life, selected by item response theory (IRT) calibration from the 65-item RAND Interactive Asthma Quality of Life bank for rapid screening. Sum score range 0-16; higher scores mean asthma is having a greater negative impact on daily life.
Purpose & Measurement Objectives
Instrument Specifications
Academic Citation & Instrument Provenance
When referencing this instrument in research, academic theses, or clinical institutional audits, please cite the original author publication:
Governance, Boundaries & Ethical Use
Imported from the OpenScales open item-bank project. This specific digital implementation has not been independently clinically validated by PsiQ — scores are for self-reflection, research, and educational purposes only, and are not a diagnosis. RAND also provides an IRT-based T-score conversion for this instrument that this platform does not implement; only the simple sum score (0-16) is calculated here. A 12-item short form (RAND-IAQL-12) with finer detail is also available on this platform.
License: Public Domain — RAND Corporation places their health survey instruments in the public domain (https://www.rand.org/health-care/surveys_tools/iaql.html). This OpenScales digital implementation is licensed CC BY 4.0. Citation: Hays, R. D., Leake, B. D., Sherbourne, C. D., Coons, S. J., Spritzer, K. L., & Bjorner, J. B. (2012). Development of a measure of asthma-specific quality of life. Quality of Life Research, 21(7), 1103-1113. This is not a diagnostic tool.