CRP and rheumatoid arthritis: DAS28-CRP (RA): Remission <2.6, Low 2.6–3.2, Moderate 3.2–5.1, High >5.1; CDAI (RA): Remission ≤2.8, Low 2.9–10, Moderate 10.1–22, High >22; SDAI (RA): Remission ≤3.3, Low 3.4–11, Moderate 11.1–26, High >26; ASDAS-CRP (SpA): Inactive <1.3, Low 1.3–2.1, High 2.1–3.5, Very High >3.5; BASDAI (SpA): Remission <2, Low 2–<4, Moderate 4–6, High >6; BASFI (SpA): Functional index, higher scores indicate greater impairment.