What is the PAS-II
Patient Activity Scale II (PAS II) for RA: Quantifies severity of rheumatoid arthritis (RA) using patient-reported symptoms. The PAS-II is a composite index composed of a visual analog scale (VAS) for pain, a patient global VAS, and the abridged version of the Health Assessment Questionnaire (HAQ-II).
You can find both a PAS-II and HAQ-II calculator here: https://www.forwarddatabank.org/calculator/
Additional reading can be found here: