PROMIS
Patient-Reported Outcomes Measurement Information System · Also known as: PROMIS measures, NIH PROMIS, Computer Adaptive Testing PROMIS
The Patient-Reported Outcomes Measurement Information System (PROMIS) is a comprehensive, flexible system of patient-reported outcome measures developed by the National Institutes of Health. Launched in 2010, PROMIS measures health across multiple domains using both fixed-item forms and computer-adaptive testing (CAT). It has become the gold standard for outcomes measurement in clinical trials and health systems research.
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When to use it
PROMIS is appropriate for diverse populations (pediatric, adult, older adults) and nearly all health conditions. It is the preferred instrument in NIH-funded clinical trials, patient-centered outcomes research, and healthcare quality improvement initiatives. Fixed-form PROMIS is suitable for lower-literacy or technology-limited populations; CAT is ideal for research requiring efficiency or when precise measurement at individual extremes is important.
Strengths & limitations
- Flexible administration through fixed forms or computer-adaptive testing; users choose the approach matching their setting
- Based on item response theory, enabling direct comparison across different PROMIS instruments and longitudinal tracking
- Large, well-validated item banks across physical, mental, and social health domains developed through rigorous methodology
- Significant burden reduction through CAT: high-precision measurement with 50–75% fewer items than traditional questionnaires
- Free publicly available measures, scoring software, and digital administration platforms eliminate licensing barriers
- Computer-adaptive testing requires digital infrastructure and may exclude populations without technology access
- Extensive available items and domains can be overwhelming; domain selection and assessment strategy must be deliberate
- Relatively newer than legacy measures; some clinical settings and funders retain familiarity with older instruments
- Population norms are primarily US-based; international applications require translation and re-norming
Frequently asked
What is the difference between PROMIS fixed forms and computer-adaptive testing?
Fixed forms are predetermined sets of items (e.g., 8-item Physical Function form) administered to all respondents in the same order. CAT dynamically selects items based on prior answers, providing high precision with fewer items (typically 4–12). Fixed forms are easier for paper administration and populations without digital access; CAT offers efficiency and flexibility in research.
What does a PROMIS Physical Function T-score of 45 mean?
A T-score of 45 is one standard deviation below the US general population mean of 50, indicating below-average physical function. In clinical context, this might represent mild-to-moderate activity limitations. The clinical significance depends on the patient's age, condition, and baseline; a 45 in an 80-year-old may be expected, while the same score in a 40-year-old suggests concern.
Can PROMIS be used in children?
Yes; PROMIS offers child-report (ages 8–17) and parent-proxy report instruments across multiple domains. Child self-report is preferred when children can reliably answer questions. Items are modified for developmental appropriateness, and separate norms and clinical cutoffs apply to pediatric populations.
Why are PROMIS measures free?
PROMIS was developed with public funding (NIH) under the principle that patient-reported outcomes should be universally accessible. The Health Measures platform makes items, scoring, and administration tools free to researchers and clinicians, removing barriers to adoption and enabling large-scale standardized outcome measurement.
Sources
- Cella, D., Yount, S., Rothrock, N., et al. (2010). The Patient-Reported Outcomes Measurement Information System (PROMIS): progress of an NIH Roadmap cooperative group during its first two years. Medical Care, 45(Suppl 1), S3–S11. DOI: 10.1097/01.mlr.0000258615.42478.55 ↗
- Reeve, B. B., Hays, R. D., Bjorner, J. B., et al. (2013). Psychometric evaluation and calibration of health-related quality of life item banks. Medical Care, 45(Suppl 3), S22–S31. DOI: 10.1097/01.mlr.0000250483.85507.04 ↗
- National Institutes of Health. (2023). PROMIS Measures Overview. National Institute of Child Health and Human Development. link ↗
How to cite this page
ScholarGate. (2026, June 3). Patient-Reported Outcomes Measurement Information System. ScholarGate. https://scholargate.app/en/health-measurement/promis
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