Clinical Features of Dermatomyositis/Polymyositis with Anti-MDA5 Antibody Positivity

Table 2

Comparison of laboratory test results between positive and negative groups M (P25, P75).

	Positive group (n = 18)	Negative group (n = 46)	χ ^2/t/Z	P
WBC (109/L)	8.025 (5.689, 10.033)	6.000 (4.438, 10.300)	−1.755^Δ	0.079
CRP (mg/L)	4.800 (1.681, 22.000)	7.533 (2.993, 12.200)	−0.274^Δ	0.784
ESR (mm/1h)	16.000 (6.500, 38.000)	33.000 (18.500, 46.750)	−2.413^Δ	0.016
NLR (%)	4.063 (2.890, 6.427)	4.117 (3.005, 7.457)	−0.687^Δ	0.492
Ferritin (ng/ml)	266.100 (129.500, 510.850)	1133.000 (685.000, 2616.000)	−3.904^Δ	0.000
CK (U/L)	91.000 (47.000, 369.000)	537.500 (67.500, 2013.500)	−2.330^Δ	0.020
LDH (U/L)	327.000 (222.000, 464.000)	315.000 (253.000, 469.500)	−0.066^Δ	0.948

Note. Mann–Whitney method.