Table 3.
Prevalence of sleep disorders by ADHD subtypes and ADHD comorbidities
| ADHD subtypes, n (%) | P-value | ADHD comorbidities, n (%) | P-value | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Combined subtype (n = 391) |
Inattentive subtype (n = 135) |
Hyperactive–impulsive subtype (n = 103) |
No (n = 208) |
Yes (n = 421) |
|||||
| Sleep disorder | 259 (66.2) | 110 (81.5) | 71 (68.9) | 0.00 | 95 (45.7) | 345 (81.9) | 0.00 | ||
| Type of sleep disorders | Insomnia | 155 (39.6) | 58 (43.0) | 40 (38.8) | 0.76 | 51 (24.5) | 202 (48.0) | 0.00 | |
| Delayed sleep–wake phase disorder | 13 (3.3) | 16 (11.9) | 1 (1.0) | 0.00 | 10 (4.8) | 20 (4.8) | 0.97 | ||
| Obstructive sleep apnea | 85 (21.7) | 44 (32.6) | 18 (17,5) | 0.01 | 37 (17.8) | 110 (26.1) | 0.02 | ||
| Restless legs syndrome | 38 (9.7) | 3 (2.2) | 25 (24.3) | 0.00 | 15 (7.2) | 51 (12.1) | 0.06 | ||
| Parasomnia | 108 (27.6) | 39 (28.9) | 28 (27.2) | 0.95 | 24 (11.5) | 151 (35.9) | 0.00 | ||
| Type of parasomnias | Sleep terrors | 34 (8.7) | 20 (14.8) | 11 (10.7) | 0.13 | 7 (3.4) | 58 (13.8) | 0.00 | |
| Nightmares | 30 (7.7) | 12 (8.9) | 10 (9.7) | 0.77 | 2 (1.0) | 50 (11.9) | 0.00 | ||
| Sleepwalking | 22 (5.6) | 7 (5.2) | 10 (9.7) | 0.27 | 6 (2.9) | 33 (7.8) | 0.02 | ||
| Confusional arousals | 80 (20.5) | 26 (19.3) | 19 (18.4) | 0.88 | 19 (9.1) | 106 (25.2) | 0.00 | ||
ADHD attention deficit hyperactivity disorder