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Table 2 Values of composite indices in the two cohorts.

From: Acute phase reactants add little to composite disease activity indices for rheumatoid arthritis: validation of a clinical activity score

Composite scores (rangea)

Routine cohort (n = 767)

Inception cohort (n = 105)

 

Median

1st;3rd Quartile

Range

Median

1st;3rd Quartile

Range

DAS28 (0.5–9.1)

4.09

2.99;5.17

0.50–8.56

5.62

4.81;6.44

2.84–8.28

DAS28-CRP (1.0–8.5)

3.78

2.71;4.82

1.60–8.28

4.67

4.04;5.50

2.35–7.42

SDAI (0–86)

16.7

8.1;26.7

0.5–78.9

29.0

20.1;41.6

7.5–77.0

CDAI (0–76)

14.8

6.5;23.3

0–67.8

25.6

17.1;37.9

6.3–70.2

  1. aMaximum possible ranges of acute phase reactants assumed: 5–100 mm for erythrocyte sedimentation rate; 0–10 mg/dl for C-reactive protein (CRP). CDAI, Clinical Disease Activity Index; DAS, Disease Activity Score; SDAI, Simplified Disease Activity Index.
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Arthritis Research & Therapy

ISSN: 1478-6362

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