Table 1. Descriptive Statistics on Study Participant Parameters.
| Variable | Obs | Mean ± SD | Min | 25th percentile | Median | 75th percentile | Max |
|---|---|---|---|---|---|---|---|
| Age (years) | 50 | 32.1 ± 9.6 | 19.0 | 24.0 | 28.5 | 41.0 | 50.0 |
| BMI (kg/m2) | 50 | 26.1 ± 5.7 | 19.0 | 21.7 | 24.9 | 29.1 | 43.5 |
| SBP (mm Hg) | 200 | 107.8 ± 13.3 | 86.0 | 99.0 | 105.0 | 112.0 | 161.0 |
| DBP (mm Hg) | 200 | 70.2 ± 9.4 | 50.0 | 65.0 | 69.0 | 75.0 | 107.0 |
| HR (beats/min) | 200 | 70.6 ± 11.3 | 44.0 | 63.0 | 71.0 | 78.0 | 111.0 |
| SDNN | 194 | 79.0 ± 37.1 | 19.1 | 53.9 | 70.1 | 92.0 | 225.8 |
| LF | 189 | 1829 ± 1900 | 66 | 597 | 1174 | 2325 | 14329 |
| HF | 189 | 2224 ± 4364 | 23 | 403 | 949 | 1758 | 38256 |
| LF/HF | 189 | 2.1 ± 2.7 | 0.1 | 0.7 | 1.3 | 2.6 | 28.2 |
| FMD 50-90 (%) | 185 | 4.1 ± 2.4 | 0.0 | 2.3 | 3.9 | 5.8 | 10.7 |
| FMD peak (%) | 185 | 7.3 ± 2.8 | 1.5 | 4.9 | 7.2 | 9.6 | 14.8 |
| BAD (cm) | 185 | 3.7 ± 0.8 | 2.3 | 3.1 | 3.6 | 4.4 | 5.2 |
| AHI | 93 | 3.4 ± 4.5 | 0.0 | 0.6 | 1.6 | 5.0 | 23.1 |
| RDI | 93 | 11.6 ± 5.6 | 2.7 | 7.8 | 10.5 | 14.4 | 32.8 |
Obs, number of observations; min, minimal value; max, maximal value; BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; HR, heart rate; SDNN, standard deviation of normal-to-normal intervals; LF, low-frequency power variability; HF, high frequency power; FMD, flow-mediated dilatation; BAD, brachial artery diameter; AHI, apnea-hypopnea index; RDI, respiratory disturbance index