Table 4

 Disease activity and function

Anti-TNF indicated by the treating rheumatologist
Candidate (n = 595)*Non-candidate (n = 612)*p Value
BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; BASFI, Bath Ankylosing Spondylitis Functional Index; CRP, C reactive protein; ESR, erythrocyte sedimentation rate; TNF, tumour necrosis factor.
*Values are mean (SD).
BASDAI5.5 (2.1)3.8 (2.2)<0.001
BASFI5.3 (2.5)3.3 (2.6)<0.001
Global pain5.4 (2.7)3.7 (2.6)<0.001
Chest expansion (cm)4.2 (9.3)5.0 (10.9)<0.001
Cervical rotation (degree)49 (60)57 (52)<0.001
Swollen joint1.9 (3.9)0.7 (2.0)<0.001
Tender enthesis5.3 (6.0)2.8 (4.4)<0.001
ESR (mm at the end of the first hour)33.5 (24.1)18.8 (16.1)<0.001
CRP (mg/l)19.9 (21.8)9.8 (9.8)<0.001