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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