Table 3.

Spearman correlations between change from baseline to week 12 in disease activity parameters and change in structural lesions

		Erosion		Backfill		Fat metaplasia
		R	p Value	R	p Value	R	p Value
ASDAS-CRP	ETN, n=83	0.40	<0.001	−0.26	0.018	−0.10	0.352
	PBO, n=96	−0.09	0.368	0.17	0.098	0.10	0.339
BASDAI	ETN, n=86	0.35	<0.001	−0.26	0.016	−0.02	0.849
	PBO, n=97	−0.12	0.233	0.20	0.047	0.14	0.171
SPARCC MRI SIJ	ETN, n=86	0.51	<0.001	−0.40	<0.001	−0.12	0.269
	PBO, n=97	0.25	0.016	−0.09	0.379	−0.13	0.219
SPARCC spine, 23-DVU	ETN, n=86	0.29	0.007	−0.20	0.072	−0.08	0.442
	PBO, n=97	−0.04	0.674	−0.04	0.735	−0.11	0.299

ASDAS-CRP, Ankylosing Spondylitis Disease Activity Score calculated using C-reactive protein; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; BME, bone marrow oedema; DVU, discovertebral unit; ETN, etanercept; PBO, placebo; R, Spearman correlation; SPARCC, Spondyloarthritis Research Consortium of Canada.