Skip to main content

Table 1 Construct and score range of the different available versions of the Juvenile Arthritis Disease Activity Score (JADAS)

From: Clinical outcome measures in juvenile idiopathic arthritis

  Physician global assessment Parent/patient global assessment Active joint count Acute-phase reactant (range) Score range (total)
JADAS      
 • JADAS10 0–10-cm VAS 0–10-cm VAS Simple count, 0–10a Normalized ESR (0–10)c 0–40
 • JADAS27 0–10-cm VAS 0–10-cm VAS Reduced count, 0–27 Normalized ESR (0–10)c 0–57
 • JADAS71 0–10-cm VAS 0–10-cm VAS Simple count, 0–71 Normalized ESR (0–10)c 0–101
JADAS-CRP      
 • JADAS10-CRP 0–10-cm VAS 0–10-cm VAS Simple count, 0–10a Normalized CRP (0–10)b 0–40
 • JADAS27-CRP 0–10-cm VAS 0–10-cm VAS Reduced count, 0–27 Normalized CRP (0–10)b 0–57
 • JADAS71-CRP 0–10-cm VAS 0–10-cm VAS Simple count, 0–71 Normalized CRP (0–10)b 0–101
cJADAS      
 • cJADAS-10 0–10-cm VAS 0–10-cm VAS Simple count, 0–10a 0–30
 • cJADAS-27 0–10-cm VAS 0–10-cm VAS Reduced count, 0–27 0–47
 • cJADAS-71 0–10-cm VAS 0–10-cm VAS Simple count, 0–71 0–91
  1. aWith a cutoff at ten, i.e., any active joint count higher than ten is given ten points
  2. bThe C-reactive protein CRP was truncated to a 0–10 scale according to the following formula: (CRP (mg/l) − 10)/10, similar to the normalized ESR used in the original JADAS. CRP values <10 mg/l are given 0 points and CRP values >110 mg/l are given ten points
  3. cThe ESR value is normalized to a 0–10 scale according to the following formula: (ESR (mm/h) – 20)/10. ESR values < 20 mm/h are given 0 points and ESR values > 120 m/h are given ten points