Table 1.
Characteristics of included participants: demographics, confounders, exposures, and outcomes
| Variable | Mean (SD) or N, (%) | N (%) Missing |
|---|---|---|
| N | 591 | |
| Age | 72 (8) | 0 (0%) |
| Race/ethnicity | 0 (0%) | |
| Black | 155 (26%) | |
| Chinese-American | 91 (15%) | |
| Hispanic | 111 (19%) | |
| White | 234 (40%) | |
| Gender | 0 (0%) | |
| Female | 322 (54%) | |
| Male | 269 (46%) | |
| Language spoken | 0 (0%) | |
| English | 480 (81%) | |
| Spanish | 47 (8%) | |
| Chinese | 64 (11%) | |
| Family Income >$50,000 per year | 314 (55%) | 22 (4%) |
| Education, College or more | 265 (45%) | 2 (< 1%) |
| Current alcohol use | 270 (46%) | 0 (0%) |
| APOE4 carrier | 152 (27%) | 25 (4%) |
| BMI (kg/m2) | 28 (5) | 0 (0%) |
| Waist circumference (cm) | 98 (13) | 0 (0%) |
| Soft palate volume (mL) | 10.6 (2.7) | 0 (0%) |
| Upper facial height (mm) | 47 (4) | 0 (0%) |
| Maxillary divergence (degrees) | 56 (5) | 0 (0%) |
| Percentage of tongue fat | 20 (3) | 55 (9%) |
| Apnea hypopnea index plus arousals (events per hour) | 17 (15) | 13 (2%) |
| Percentage of sleep time < 90% oxygen saturation | 2 (5) | 0 (0%) |
| Wake after sleep onset time (minutes) | 83 (56) | 0 (0%) |
| Epworth sleepiness scale | 6 (4) | 10 (2%) |
| CASI score | 91 (7) | 20 (3%) |
| Digit Span Forward score | 10 (3) | 3 (1%) |
| Digit Span Backward score | 6 (2) | 3 (1%) |
| Digit Symbol Coding score | 53 (18) | 47 (8%) |
CASI = Cognitive Abilities Screening Instrument