Table 1 Demographic, clinical and immunological characteristics of 100 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%)