Table 1

Characteristics of patients with idiopathic inflammatory myopathies and healthy controls

Characteristic

IIM

HC


N

42

27

Age (years)

53.8 ± 14.2

49.5 ± 8.6

Sex (F/M)

31/11

22/5

CRP (mg/l)

9.3 ± 21.6

1.8 ± 1.5

CK (ukat/l, ULN 2.7)

33.6 ± 58.2

NA

Myoglobin (μg/l, ULN 70)

1345 ± 2422

NA

Clinical activity of myositis

MYOACT global

0.15 ± 0.11

NA

MMT8 (maximum 80)

65.34 ± 12.31

NA

Autoantibodies (%)

Anti-Jo-1

24

NA

Anti-Ro-52

37

NA

Anti-Ro-60

2

NA

Anti-PL-7

5

NA

Anti-PM-Scl-100

12

NA

Anti-PM-Scl-75

7

NA

Anti-Mi-2

12

NA

Anti-Ku

2

NA

Anti-SRP

5

NA

Anti-U1RNP

5

NA

Anti-histones

5

NA

Other (AMA, M2, CENP-B)

2

NA

Negative

21

NA

Treatment (%)

Before therapy

19

0

Treatment less than 1 month

53

0

Treatment more than 1 month

26

0

Glucocorticoids

67

0

Others

19

0


Abbreviations: CK, creatine kinase; CRP, C-reactive protein; F, female; HC, healthy controls; IIM, inflammatory myopathies; M, male; MMT8, manual muscle testing of eight muscle groups; MYOACT, disease activity assessment visual analogue scales; N, number; NA, not analysed

Filková et al. Arthritis Research & Therapy 2012 14:R111   doi:10.1186/ar3836

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