Table 1.
Baseline characteristics of the study participants
| Variables | Non-Sleep Apnea | Sleep Apnea | P-value |
|---|---|---|---|
| Number of subjects (%) | 7853 (79.99) | 1964 (20.00) | |
| Age (years), Mean ± SD | 45.7 ± 19.5 | 49.3 ± 17.4 | < 0.001 |
| Sex, n (%) | < 0.001 | ||
| Male | 3687 (47) | 1148 (58.5) | |
| Female | 4166 (53) | 816 (41.5) | |
| Race/ethnicity, n (%) | 0.223 | ||
| Mexican American | 1522 (19.4) | 345 (17.6) | |
| Other Hispanic | 603 (7.7) | 162 (8.2) | |
| Non-Hispanic White | 3643 (46.4) | 955 (48.6) | |
| Non-Hispanic Black | 1750 (22.3) | 419 (21.3) | |
| Other Race | 335 (4.3) | 83 (4.2) | |
| BMI (kg/m2), Mean ± SD | 28.1 ± 6.4 | 30.7 ± 7.3 | < 0.001 |
| Sleep duration on weekdays (hours), Mean ± SD | 7.1 ± 3.3 | 6.7 ± 2.6 | < 0.001 |
| Depression | < 0.001 | ||
| No | 7338 (93.4) | 1695 (86.3) | |
| Yes | 515 (6.6) | 269 (13.7) | |
| Smoke, n (%) | < 0.001 | ||
| Yes | 2271 (54.2) | 526 (45.9) | |
| No | 1919 (45.8) | 621 (54.1) | |
| Drink, n (%) | 0.276 | ||
| No | 2459(35.2) | 619 (33.8) | |
| Yes | 4529 (64.8) | 1211(66.2) | |
| Diabetes, n (%) | < 0.001 | ||
| Yes | 727 (9.7) | 297 (16) | |
| No | 6782 (90.3) | 1560 (84) | |
| Hypertension, n (%) | < 0.001 | ||
| Yes | 2190 (28.4) | 781 (40.6) | |
| No | 5519 (71.6) | 1142 (59.4) | |
| Coronary heart disease, n (%) | < 0.001 | ||
| Yes | 154 (3.2) | 79 (6.2) | |
| No | 4656 (96.8) | 1187 (93.8) | |
| Stroke, n (%) | 0.016 | ||
| Yes | 164 (3.4) | 62 (4.9) | |
| No | 4655 (96.6) | 1207 (95.1) | |
| HDL-C, Median (IQR) | 1.3 (1.1, 1.6) | 1.2 (1.0, 1.5) | < 0.001 |
| Cholesterol, Median (IQR) | 4.9 (4.3, 5.7) | 5.0 (4.3, 5.7) | 0.337 |
| Triglycerides, Median (IQR) | 1.2 (0.8, 1.8) | 1.3 (0.9, 2.0) | < 0.001 |
| LDL-C, Median (IQR) | 2.8 (2.2, 3.5) | 2.9 (2.4, 3.5) | 0.025 |
Data are presented as n (%), median (IQR), or mean (SD)
BMI Body mass index, HDL-C High-density lipoprotein cholesterol, LDL-C Low-density lipoprotein cholesterol, SD Standard deviation, IQR Interquartile range