Table 1

Patient characteristics at baseline (N = 848)

Characteristic

Value

Female, %

69

Age, mean (SD) years

55.2 (14.2)

Duration of symptoms, median (IQR)

0.0 (0.0 to 1.0)

Rheumatoid factor positive, %

51.3

DAS28, mean (SD)

5.2 (1.2)

SHS total, median (IQR)/mean (SD)

0.0 (0.0 to 3.0)/4.1(12.2)

HAQ DI total score, median (IQR)

1.1 (0.6 to 1.9)

DAS28 = Disease Activity Score in 28 joints; HAQ DI = Health Assessment Questionnaire disability index; IQR = Interquartile range; SHS total = total Sharp/van der Heijde score for a subgroup of patients with a follow up ≥ 2 years;

van der Leeden et al. Arthritis Research & Therapy 2010 12:R3   doi:10.1186/ar2901