Characteristics of the patients with systemic sclerosis.
| Patients | SSc Cohort, n = 659 |
|---|---|
| Age, yrs ± SD | 59 ± 11 |
| Female, n (%) | 574 (87) |
| Disease duration, yrs ± SD | 11 ± 8 |
| Diffuse cutaneous subtype, n (%) | 247 (37) |
| Pulmonary fibrosis, n (%) | 263 (40) |
| DLCO/VA < 75%, n (%) | 291 (44) |
| Pulmonary arterial hypertension (defined by right heart catheterization, n (%) | 51 (8) |
| Digital ulcerations, n (%) | 199 (30) |
| Positive anti-topoisomerase I antibodies, n (%) | 163 (25) |
| Positive anti-centromere antibodies, n (%) | 270 (41) |
DLCO/VA: diffusing capacity for carbon monoxide divided by alveolar volume.