Parameter Range Mean± SD Group(I)Mean±SD(Range) Group(II)Mean±SD(Range) Group(III)Mean±SD(Range)
Ritchie articular index 0–26 11.20 ± 9.35 1.80 ± 1.9(0–5) 9.20 ± 4.9(0–20) 16.59 ± 7.6(4–26)
Morning stiffness (hours) 0.25–6 2.49 ± 1.55 1.36 ± 0.7(0.25–2.5) 1.79 ± 0.94(0.25–3.5) 3.78 ± 1.8 (0.25–6)
Disease activity score (DAS) 1.13–8.34 5.26 ± 2.64 2.89 ± 0.54(1.13–3.08) 4.61 ± 0.5(3.25–5.08) 6.95 ± 0.7(5.11–8.34)
Rheumatoid factor (IU/ml) 17.4–47.8 32.6 ± 15.20      
Anti-citrullinated peptide antibody 175–275 200 ± 25      
C-reactive protein (mg/L) 18–30 24 ± 6      
Table 3: Activity and severity indices of RA patients.