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Table 1 Demographic, clinical and immunological characteristics of 100 SSc patients

From: Functional, radiological and biological markers of alveolitis and infections of the lower respiratory tract in patients with systemic sclerosis

  SSc patients
Age (years), mean ± sd 55.4 ± 11.9
Disease duration (years), median (I.Q. range) 6 (3–13)
Sex n (%) 92 F (92%) 8 M (8%)
Skin involvement:  
dSSc n (%) 24 (24%)
lSSc n (%) 76 (76%)
Autoantibodies pattern:  
ACA n (%) 41 (41%)
AntiScl 70 n (%) 38 (38%)
Antinucleolus n (%) 10 (10%)
AntiRNP n (%) 6 (6%)
ACA/Scl 70/nucleolus/RNP negative n (%) 5 (5%)
Smokers n (%) 14 (14%)
Ex-smokers n (%) 18 (18%)
  1. SSc: systemic sclerosis; dSSc: diffuse skin involvement; lSSc: limited skin involvement; ACA: anticentromere antibodies; antiScl 70: antitopoisomerasi I antibodies; antiRNP: antiribonucleoproteins antibodies.