Table 2 Sleep characteristic in adolescents stratified by different categories of body-mass index (BMI)
Underweight | Normal weight | Overweight | Obesity | |
|---|---|---|---|---|
Sleep duration category (weekdays) | ||||
Short sleeper (<1SD: 5 hours), % (n) | 27.3% (39) | 13.2%(972)* | 18.3% (2253) | 24.2% (81) |
Normal Sleeper, (5–8 hours) % (n) | 65.7% (94) | 76.4% (5636) | 72.1% (997) | 66.6% (223) |
Long sleeper (1 > SD: 8 hours), % (n) | 7.0% (10) | 10.4% (769) | 9.6% (133) | 9.3% (31) |
Sleep duration weekdays, mean (SD) | 5:48 (1:51) | 6:29 (1:36)* | 6:13 (1:43) | 5:57 (1:57) |
Sleep duration weekends, mean (SD) | 8:28 (2:09) | 8:41 (1:47)* | 8:26 (1:59) | 8:09 (2:08) |
Insomnia | 19.3% (28) | 12.6% (943)* | 16.4% (230) | 20.1% (68) |
OSA symptoms, % (n) | 1.6% (2) | 3.2% (194)* | 6.8% (77) | 12.8% (35) |