Table 3. Prevalence of EDS (defined as a modified ESS score of ≥11) according to clinical variables.
| n (%) | p | |
|---|---|---|
| Sex | <0.001 | |
| Female | 1,234 (20.4) | |
| Male | 1,020 (15.4) | |
| School grade | 0.012 | |
| First | 851 (19.1) | |
| Second | 738 (17.4) | |
| Third | 665 (16.8) | |
| BMI | 0.165 | |
| Underweight | 130 (16.2) | |
| Normal | 1,835 (18.1) | |
| Overweight | 55 (18.2) | |
| Obese | 234 (16.1) | |
| Self-perceived snoring | <0.001 | |
| No | 1,532 (15.7) | |
| Yes | 722 (25.0) | |
| Self-perceived apnea | <0.001 | |
| No | 1,882 (16.4) | |
| Yes | 372 (32.1) | |
| Sleep duration during a school day, hours | <0.001 | |
| <5 | 372 (26.4) | |
| ≥5 and <6 | 686 (19.0) | |
| ≥6 and <7 | 759 (16.7) | |
| ≥7 | 437 (14.1) | |
| Subjective perception of sleep duration | ||
| Adequate | 322 (8.9) | |
| Considerable | 83 (12.1) | |
| Insufficient | 1,849 (22.1) |
BMI: body mass index, EDS: excessive daytime sleepiness, ESS: Epworth Sleepiness Scale.