Table 2.
Characteristics of adolescents’ sleep problems
| Never n (%) |
Rarely n (%) |
Occasionally n (%) |
Frequently n (%) |
|
|---|---|---|---|---|
| How often do you fall asleep in class? | 551 (45.4) | 372 (40.7) | 219 (18.1) | 41 (3.4) |
| How often do you feel sleepy during lessons? | 98 (8.1) | 432 (35.6) | 461 (38) | 164 (13.5) |
| How often do you have difficulty to fall asleep in the night? | 371 (30.6) | 344 (28.4) | 308 (25.4) | 122 (10.1) |
| How often do you feel sleepy and tired in the day? | 49 (4) | 248 (20.5) | 462 (38.1) | 345 (28.5) |
| How often do you have difficulty to wake up in the morning? | 141 (11.6) | 290 (23.9) | 289 (23.8) | 257 (21.2) |
| How often do you have nightmares? | 438 (36.1) | 483 (39.9) | 197 (16.3) | 62 (5.1) |
| How often do you talk in sleep (your or your families’ statement)? | 749 (61.8) | 252 (20.8) | 128 (10.6) | 47 (3.9) |
| How often do you have teeth grinding (your or your families’ statement)? | 1069 (88.2) | 70 (5.8) | 36 (3) | 27 (2.2) |
| How often do you need medication or alcohol to fall asleep? | 1153 (95.1) | 27 (2.2) | 20 (1.7) | 8 (.7) |