| Events "sometimes/seldom/never" | Events "always/frequently" | |
|---|---|---|
| PDSS score | Mean ± SD: 12.2 ± 4.5 | |
| Range: 0 - 28 | ||
| Sum answers of Q1-Q8 | 106 (40.3%) | 157 (59.7%) |
| Answer to Q1: "fall asleep or get drowsy during class periods" | 240 (90.6%) | 25 (9.4%) |
| Answer to Q2: "get sleepy or drowsy while doing your homework" | 243 (91.7%) | 22 (8.3%) |
| *Answer to Q3: "usually alert most of the day" | 16 (6.0%) | 249 (94.0%) |
| Answer to Q4: "ever tired and grumpy during the day" | 236 (89.4%) | 28 (10.6%) |
| Answer to Q5: "have trouble getting out tobed in the morning" | 215 (81.1%) | 50 (18.9%) |
| Answer to Q6: "fall back to sleep after being awakened in the morning" | 235 (88.7%) | 30 (11.3%) |
| Answer to Q7: "need someone to awaken you in the morning" | 168 (63.6%) | 96 (36.4%) |
| Answer to Q8: "you need more sleep" | 180 (67.9%) | 85 (36.4%) |