Table 2:

Biochemical characteristics and MR imaging measurements with performance ranking

GCA	Subjects, n	CRP, mg/dL	ESR	Wall, mm	Lumen, mm	Lumen/wall	MR score
Positive	31	11.2 ± 7.1	76.1 ± 30.9	0.74 ± 0.32	0.65 ± 0.38	1.23 ± 1.1	2.03 ± 1.05
Negative	33	7.05 ± 7.3	48.8 ± 32.3	0.39 ± 0.18	0.84 ± 0.29	2.63 ± 1.43	0.45 ± 0.56
P value	—	0.033	0.0024	0.00014	0.036	0.000676	0.000009
P value ranking	—	5	4	2	6	3	1

Note:—Various parameters for the GCA-positive and GCA-negative patient collectives. GCA indicates giant cell arteritis. The C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), wall thickness, lumen diameter, ratio of lumen and wall, and the MR mural inflammation score are presented as mean ± SD. The bottom row shows the ranking of their P values when used as a single predictor for the ACR-based diagnosis, where 1 represents the lowest P value and 6 the highest.