. Author manuscript; available in PMC: 2016 Oct 1.

Published in final edited form as: Arthritis Care Res (Hoboken). 2015 Oct;67(10):1416–1425. doi: 10.1002/acr.22620

Table 4. CK values (closest to biopsy) and association with histologic features and categories.

	CK if present (Median ± SD)	CK if absent (Median ± SD)	p *
Histopathologic features
Inflammation (n=20)	1199 ± 3548	187 ± 1212	0.00006
Necrosis (n=28)	915 ± 3187	118 ± 131	0.0001
Fibrosis (n=14)	490 ± 1436	304 ± 3212	0.96
Acute Neurogenic Atrophy (n=20)	428 ± 3668	223 ± 1530	0.49
Histopathologic categories
Polymyositis (n=2)	8710 ± 9407	554 ± 2173	0.06
Dermatomyositis (n=3)	1760 ± 1095	562 ± 3117	0.79
Necrotizing myopathy (n=9)	509 ± 2207	830 ± 3208	0.47
Non-specific myositis (n=15)	1467 ± 4108	369 ± 1427	0.0008
Fibrosis only (n=3)	168 ± 650	662 ± 3105	0.29
Acute denervation (n=3)	172 ± 78.2	748 ± 3126	0.05