Instruments to Measure Rheumatoid Arthritis Disease Activity and Define Remission

Patient Activity Scale (PAS) or PAS-II (range: 0-10)
Remission: 0 to 0.25
Low activity: 0.26 to 3.7
Moderate activity: 3.71 to <8.0
High activity: ≥8.0


Routine Assessment of Patient Index Data 3 (range: 0-10)
Remission: 0 to 1.0
Low activity: >1.0 to 2.0
Moderate activity: >2.0 to 4.0
High activity: >4.0 to 10


Clinical Disease Activity Index (range: 0 -76.0)
Remission: ≤2.8
Low activity: >2.8 to 10.0
Moderate activity: >10.0 to 22.0
High activity: >22


Disease Activity Score in 28 joints (range: 0- 9.4)
Remission: <2.6
Low activity: ≥2.6 to <3.2
Moderate activity: ≥3.2 to ≤5.1
High activity: >5.1


Simplified Disease Activity Index (range: 0- 86.0)
Remission: ≤3.3
Low activity: >3.3 to ≤11.0
Moderate activity: >11.0 to ≤26
High activity: >26