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Table 1 Characteristics of patients with idiopathic inflammatory myopathies and healthy controls

From: Resistin in idiopathic inflammatory myopathies

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
  1. 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