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Baseline characteristics of study population.
| Characteristic | Mean (s.d.) or n (%) |
|---|---|
| Age (years) | 56·7 (8·8) |
| Gender | |
| Male | 6 (32%) |
| Female | 12 (67%) |
| Race | |
| Caucasian | 14 (78%) |
| African American | 4 (22%) |
| Disease type | |
| Limited | 13 (72%) |
| Diffuse | 5 (28%) |
| Raynaud’s | 17 (94%) |
| Arthralgias | 15 (83%) |
| Myalgias | 1 (6%) |
| Gastrointestinal symptoms | 17 (94%) |
| Cardiac symptoms | 1 (6%) |
| Pulmonary symptoms | 12 (67%) |
| Duration of disease (years) | 11·2 (11·0) |
