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Population characteristics
| Characteristic | Mean (SD) or N (%) |
|---|---|
| Age (years) (Mean / SD) | 58.7 (15.7) |
| Race (N / %) | |
| White | 106 (55.5%) |
| Black | 80 (41.9%) |
| Other | 5 (2.6%) |
| Gender (N / %) | |
| Female | 84 (44.0%) |
| Male | 107 (56.0%) |
| Anemia or PAD not severe(N / %) | |
| Yes | 13 (6.8%) |
| No | 178 (93.2%) |
| Supplemental Oxygen (N / %) | |
| Yes | 44 (23.0%) |
| No | 147 (77.0%) |
