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Characteristics of the study participants (n=60)
| Variable | Number (%) or Mean ± standard deviation |
|---|---|
| Female | 30 (50) |
| Non-white | 19 (32) |
| Age (years)* | 52±5 |
| Body mass index (kg/m2) * | 27±5 |
| Medication Use | |
| Anticholinergic | 5 (8) |
| Beta-Blocker | 1 (2) |
| Diuretic | 4 (7) |
| Selective serotonin reuptake inhibitor (SSRI) | 10 (17) |
| Sympathomimetic | 4 (7) |
| Thyroid medication | 3 (5) |
| Atrioventricular block (per subject) | 9 (15) |
| Non-fasting/smoking <12 hours before either visit | 4 (7) |
n=59
