Table 1.
Study Cohort.
| All | BMI < 30 kg/m2 | BMI ≥ 30 kg/m2 | P | |
|---|---|---|---|---|
| N | 104 | 51 | 53 | |
| Age, years, mean ± SD | 45.6 ± 13.5 | 45.8 ± 13.7 | 45.5 ± 13.4 | .926 |
| Race, n (%) | .003 | |||
| African American | 45 (45.5) | 14 (28.0) | 31 (63.3) | |
| Caucasian | 45 (45.5) | 29 (58.0) | 16 (32.7) | |
| Hispanic | 3 (3.0) | 3 (6.0) | 0 (0.0) | |
| Asian | 6 (6.1) | 4 (8.0) | 2 (4.1) | |
| Female, n (%) | 45 (44.6) | 21 (42.0) | 24 (47.1) | .756 |
| BMI, kg/m2, mean ± SD | 32 ± 7.1 | 26.3 ± 2.5 | 37.4 ± 5.7 | <.001 |
| Education, n (%) | .019 | |||
| Some HS | 2 (2.0) | 1 (2.0) | 1 (2.0) | |
| HS graduate | 2 (2.0) | 0 (0.0) | 2 (4.0) | |
| Some college | 22 (22.2) | 5 (10.2) | 17 (34.0) | |
| College graduate | 29 (29.3) | 15 (30.6) | 14 (28.0) | |
| Graduate school | 44 (44.4) | 28 (57.1) | 16 (32.0) | |
| Epworth scale, mean ± SD | 8.7 ± 4.4 | 7.8 ± 4.6 | 9.6 ± 4 | .034 |
| AHI, mean ± SD | 33.3 ± 24.9 | 21.6 ± 15.9 | 44.6 ± 26.9 | <.001 |
Abbreviations: AHI, apnea-hypopnea index; BMI, body mass index; HS, high school.