Table 1.
Descriptive Statistics by RDI
| <10 (NO/Little SDB) (N = 21) |
10–15 (Mild SDB) (N = 40) |
15–30 (Moderate SDB) (N = 84) |
30–50 (Severe SDB) (N = 72) |
50−75 (Very Severe SDB) (N = 58) |
≥75 (Extremely Severe SDB) (N = 45) |
ANOVA (F-test, p-value) |
|
|---|---|---|---|---|---|---|---|
| Gender (% Men) | 47.62 | 52.50 | 66.67 | 62.50 | 77.59 | 75.56 | |
| Ethnicity (% White) | 71.43 | 72.50 | 84.52 | 79.17 | 84.48 | 88.89 | |
| Marital status (% married) | 66.67 | 65.00 | 69.88 | 76.06 | 81.03 | 53.33 | |
| Body mass index (mean, SD) | 27.96 (4.78) | 30.10 (6.65) | 29.88 (5.57) | 31.96 (7.35) | 34.59 (8.51) | 39.64 (7.27) | 15.89, p = 0.00001 |
| Age (mean years, SD) | 41.99 (15.86) | 53.42 (13.28) | 53.71 (14.18) | 55.96 (12.27) | 53.37 (12.65) | 49.85 (11.27) | 4.26, p = 0.0009 |
| Years of education (mean, SD) | 15.45 (2.21) | 15.75 (2.96) | 15.12 (2.44) | 14.97 (2.35) | 14.98 (3.08) | 14.69 (2.84) | 0.82, p = 0.5375 |
| Epworth Sleepiness Scale | 8.95 (3.76) | 9.53 (4.15) | 9.00 (4.49) | 9.63 (4.23) | 10.14 (3.87) | 11.4 (4.34) | 2.19, p = 0.0556 |
| Total sleep time (mean minutes, SD) | 430.48 (68.21) | 402.90 (90.82) | 425.60 (79.30) | 413.89 (73.36) | 426.57 (74.79) | 423.27 (97.67) | 0.68, p = 0.6389 |