Table 1.
Study population characteristics by OSA (N = 1813), MESA Study 2010–2013
| Characteristic | With moderate-to-severe OSA (AHI > 15; n = 613) mean (SD) or number (%) | Without moderate-to-severe OSA (AHI ≤ 15) (n = 1200) mean (SD) or number (%) | P* |
|---|---|---|---|
| Age, year | 68.8 ± 8.9 | 68.1 ± 9.2 | 0.11 |
| Race | 0.02 | ||
| Non-Hispanic white | 210 (34.3%) | 476 (39.7%) | |
| Black | 161 (26.2%) | 338 (28.1%) | |
| Hispanic | 161 (26.3%) | 264 (22.0%) | |
| Chinese | 81 (13.2%) | 122 (10.2%) | |
| Sex | <0.01 | ||
| Male | 381 (62.1%) | 455 (37.9%) | |
| Female | 232 (37.9%) | 745 (62.1%) | |
| Education | 0.12 | ||
| Less than high school | 96 (15.7%) | 279 (23.8%) | |
| High school/GED | 93 (15.2%) | 338 (28.8%) | |
| Some college but no degree | 164 (26.7%) | 214 (18.3%) | |
| College degree or higher | 260 (42.4%) | 341 (29.1%) | |
| Income | 0.12 | ||
| <$25000 | 172 (28.6%) | 279 (23.8%) | |
| $25–49999 | 150 (24.9%) | 338 (28.8%) | |
| $50–74999 | 108 (17.9%) | 214 (18.3%) | |
| ≥$75000 | 172 (28.6%) | 341 (29.1%) | |
| Sleep duration | |||
| Short sleep (<6 hr per night) | 218 (35.6%) | 334 (27.8%) | <0.01 |
| Long sleep (>9 hr per night) | 12 (2.0%) | 18 (1.5%) | 0.47 |
| Smoking status | 0.12 | ||
| Current smoker | 33 (5.5%) | 88 (7.4%) | |
| Former/never | 573 (94.5%) | 1104 (92.6%) | |
| Physical activity, hours per day | <0.01 | ||
| Low | 227 (37.1%) | 335 (27.9%) | |
| Moderate | 189 (30.8%) | 417 (34.8%) | |
| High | 197 (32.1%) | 448 (37.3%) | |
| Body mass index, kg/m2 | 30.67 ± 5.94 | 27.78 ± 5.08 | <0.01 |
| Waist–hip ratio, cm | 0.962 ± 0.066 | 0.926 ± 0.090 | <0.01 |
| Alcohol use (currently drink alcohol) | 0.67 | ||
| Yes | 277 (45.3%) | 530 (44.2%) | |
| No | 335 (54.7%) | 669 (55.8%) | |
| Diabetes | <0.01 | ||
| Yes | 155 (25.5%) | 187 (15.7%) | |
| No | 452 (74.5%) | 1001 (84.3%) | |
| Time in N3 sleep, min | 29.46 ± 29.55 | 40.90 ± 34.76 | <0.01 |
| Time in REM sleep, min | 58.28 ± 29.29 | 71.00 ± 29.18 | <0.01 |
| Time in N3 sleep, % | 8.26 ± 7.97 | 10.97 ± 9.15 | <0.01 |
| Time in REM sleep, % | 16.29 ± 7.02 | 18.97 ± 6.29 | <0.01 |
*Chi-square or ANOVA tests for categorical or continuous variables (respectively).