LOINC long common name : Patient activity scale [PAS];
LOINC description : The Patient Activity Scale (PAS) questionnaire contains a combination of single measures
from the Health Assessment Questionnaire (HAQ) as well as the patient's assessment
of pain in the past week and global assessment of pain (PtGA). The combined scores
from these measures are used to derive the PAS total score [LOINC: 75840-9]. The PAS
is calculated by multiplying the HAQ by 3.33 and then dividing the sum of the pain
scale, PtGA and HAQ by 3. Assessment of disease activity for PAS may be defined as
remission 0.25, minimal 3.7, moderate 8.0 and severe 8.0. The PAS and PAS-II [LOINC:
75875-5] contain only patient derived data and are useful for the overall, continuous
measure of rheumatoid arthritis (RA) disease activity.;