Our CATs deliver precise measurement
of eye and vision-specific quality of life, fast.
What is CAT?
CAT is a method of administering items (questions) from calibrated item banks.
Each item bank measures a subjective construct (e.g. ‘activity limitation’) and usually contains far more items than would normally be found in a paper-pencil questionnaire.
Using an algorithm based on artificial intelligence, the CAT system iteratively select an item from the bank that most closely targets the person’s quality of life at that point in the test.
This “smart-technology” means that quality of life scores are generated quickly, using only a subset of the available items.
Benefits of CAT
CAT requires fewer items and 50-90% less time to arrive at equally precise scores, reducing burden for busy clinics and clinical trials with a large testing protocol.
With items tailored to a person’s level of the construct, testing is personalised. This increases test-takers’ motivation and improves data quality.
New items can be added to align with innovations in disease management or technology, and out of date items can be removed without threatening test validity. This ensures items remain relevant.
CAT mitigates the need for data entry and manual calculation of scores by providing real-time feedback, facilitating the integration of results promptly into the therapeutic process.
Find out more about the benefits of computerized adaptive tests here
Our CATs are developed and validated using a multi-staged, mixed-methods process.
Domain & item development
Psychometric testing of item banks using data from a large clinical sample of patients.
CAT platform development and testing in a clinical sample of patients.