Table 2

Multiple regression analysis showing variables associated with CRP levels in ankylosing spondylitis patients at baseline

Response variable (CRP)^a

Independent variable

Regression coefficient (SE)

P value

MMP-3 (pg/ml)

1.108 × 10^-5 (2.335 × 10^-6)

0.000005

MMP-8 (pg/ml)

4.189 × 10^-6 (1.610 × 10^-6)

0.010

MMP-2 (pg/ml)

-2.277 × 10^-6 (9.477 × 10^-7)

0.018

SE, standard error. ^aC-reactive protein (CRP) levels were log transformed to normality before analysis.

Mattey et al. Arthritis Research & Therapy 2012 14:R127   doi:10.1186/ar3857