Table 2.
Study Sample Characteristics Stratified by AHI Severity (n = 328)
| Baseline Characteristic | AHI Category |
||
|---|---|---|---|
| < 5 | 5-15 | ≥ 15 | |
| Age, y | 48 (8) | 52 (8) | 52 (8) |
| Male sex, % | 56 | 72 | 91 |
| BMI, kg/m2 | 28 (5) | 31 (5) | 34 (5) |
| Current smoker, % | 15 | 23 | 19 |
| Alcohol, number of drinks/wk | 3 (5) | 4 (6) | 5 (8) |
| Antihypertensive medication users, % | 13 | 23 | 22 |
| Median AHI, events/h | 0.8 | 8.2 | 26.2 |
| Nondipping systolic BP, % | 13 | 20 | 19 |
| Nondipping diastolic BP, % | 6 | 6 | 16 |
Data are presented as mean (SD) or percentage; apnea-hypopnea index (AHI) is presented as median. BP refers to blood pressure.