Baseline characteristics of patients with systemic sclerosis (SSc) and the matched cohort.
| Characteristics | Patients with SSc, n = 838 | Matched Cohort, n = 8380 | p | ||
|---|---|---|---|---|---|
| n | (%) | n | (%) | ||
| Median age, yrs (range) | 49 (20–87) | 49 (20–87) | 1.000a | ||
| Age, yrs | |||||
| < 60 | 604 | (72.1) | 6040 | (72.1) | 1.000b |
| ≥ 60 | 234 | (27.9) | 2340 | (27.9) | |
| Sex | |||||
| Female | 639 | (76.3) | 6390 | (76.3) | 1.000b |
| Male | 199 | (23.7) | 1990 | (23.7) | |
| Comorbidity | |||||
| Diabetes mellitus | 130 | (15.5) | 1297 | (15.5) | 0.978b |
| Hypertension | 241 | (28.8) | 2407 | (28.7) | 0.983b |
| COPD | 206 | (24.6) | 2068 | (24.7) | 0.951b |
| Chronic kidney disease | 148 | (17.7) | 1483 | (17.7) | 0.979b |
| Liver cirrhosis | 27 | (3.2) | 272 | (3.2) | 0.970b |
| Malignancies | 15 | (1.8) | 153 | (1.8) | 0.941b |
| Substance abuse | 3 | (0.4) | 30 | (0.4) | 1.000c |