Table 1. Demographic and clinical characteristics of patients with systemic sclerosis (SSc).

Age, mean ± SD (years)	51.8 ± 13.6
Male	5 (12.8%)
Female	34 (87.2%)
lcSSc subset	24 (61.5%)
dcSSc subset	15 (38.5%)
Disease duration, mean ± SD (years)*	6.8 ± 4.7
ANA	39 (100%)
ACA	20 (51.3%)
Anti-topo I	12 (30.8%)
Digital ulcers	18 (46.1%)
Early NVC pattern	6 (15.4%)
Active NVC pattern	14 (35.9%)
Late NVC pattern	19 (48.7%)
mRSS, mean ± SD	11.5 ± 5.7
ILD§	16 (41.0%)

ACA, anticentromere antibodies; ANA, antinuclear antibodies; Anti-topo I, anti-topoisomerase I antibodies; dcSSc, diffuse cutaneous systemic sclerosis; ILD, interstitial lung disease; lcSSc, limited cutaneous systemic sclerosis; mRSS, modified Rodnan skin score; NVC, nailfold videocapillaroscopy.

Except where indicated otherwise, values are the absolute number and percentage of patients.

*Disease duration was calculated since the first non-Raynaud’s symptom of SSc.

^§Determined by high-resolution computed tomography scan.