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Baseline characteristics of 50 cases and 100 control subjects
| Baseline characteristic | Cases (N = 50) % or mean ± SD | Controls (N = 100) % or mean ± SD |
|---|---|---|
| Demographics | ||
| Age | 41.6 ± 17 | 37.9 ± 15.8 |
| Males | 50 | 63 |
| Comorbidities | ||
| Hypertension | 16 | 7 |
| Diabetes mellitus | 10 | 3 |
| Coronary artery disease | 6 | 3 |
| Congestive heart failure | 2 | 1 |
| COPD | 2 | 2 |
| Permanent pacemaker | 2 | 0 |
COPD, chronic obstructive pulmonary disease; N, number of subjects; SD, standard deviation.
