OM1 has provided commonly accepted cut- off values used to map CDAI and SDAI to their respective categories. 

Clinical Disease Activity Index (CDAI)

  • remission ≤ 3.3
  • low >3.3, ≤ 11
  • moderate >11, ≤ 26
  • high > 26

Simplified Disease Activity Index (SDAI)

  • remission ≤ 2.8
  • low >2.8, ≤ 10
  • moderate >10, ≤ 22
  • high > 22
Category: Psoriatic Arthritis