Table 4 Predictors for severe disease course as indicated by PGDA ≥ 4

Female

1.24

0.78; 1.97

0.371

ESR; one additional mm/h

1.03

1.01; 1.05

0.006

CRP, one additional mg/l

1.05

0.99; 1.09

0.068

One additional radiological lesion

1.19

1.08; 1.31

 < 0.001

Clavicle

1.68

1.12; 2.53

0.012

Pelvis

1.55

1.21; 1.97

0.005

Femur

1.47

1.15; 1.89

0.002

Tibia

1.21

0.91; 1.61

0.184

Calcaneus

1.38

0.89; 2.15

0.151

Multifocal

2.48

1.41; 4.38

0.002