Table 1

Baseline characteristics and 5-year outcome of patients who will satisfy cumulatively 1987 ACR criteria for rheumatoid arthritis at any time during the first 5 years of follow-up, versus those who will not

Classification

Satisfying 1987 ACR criteria within the first 5 years

(n = 463; 72%)

NEVER satisfying 1987 ACR criteria within the first 5 years (n = 177; 28%)

P value


Baseline characteristics

Age (onset)

55.4 (45.8, 65.4)

47.7 (34.3, 57.9)

3.6E-09

Female

305 (66%)

114 (64%)

0.73

Symptom duration

5.3 (2.6, 11.3)

4.5 (1.9, 9.0)

0.01

Anti-CCP +ve

187 (40.4%)

8 (4.5%)

1.2E-18

Anti-CCP titer

1.6 (0.7, 42.5)

0.8 (0.5, 1.4)

6.4E-16

HAQ

0.875 (0.375, 1.5)

0.25 (0, 0.625)

5.8E-24

DAS28

4.4 (3.5, 5.4)

2.8 (2.1, 3.6)

5.2E-33

5-year outcome

HAQ

1.125 (0.375, 1.75)

0.25 (0, 0.625)

4.1E-24

DAS28

2.8 (2.0, 3.9)

2.0 (1.15, 2.4)

1.3E-14

Erosions

220 (56.9%)

12 (8.8%)

3.1E-22

Larsen score

12 (2, 31)

1 (0, 4)

9.3E-21

DMARD received

278 (60.0%)

23 (13.1%)

2.2E-26


Continuous variables expressed as median (interquartile range) and compared by using the Mann-Whitney U test. Categoric variables expressed as number (percentage) and compared by using the χ2 test. ACR, American College of Rheumatology criteria for rheumatoid arthritis; DAS, disease activity score; HAQ, Health Assessment Questionnaire.

Burr et al. Arthritis Research & Therapy 2012 14:R109   doi:10.1186/ar3834

Open Data