TABLE 4.
Caregiver-reported comorbid conditions.
| Condition | N (%) |
| Neurodevelopmental/neurologic problems | |
| Premature birth | 11 (13%) |
| History of regression | 26 (31%) |
| Neurologic conditions | 17 (20%) |
| Seizures | 6 (7%) |
| Headaches | 2 (2%) |
| Sleep problems | |
| Any sleep problem | 33 (40%) |
| Difficulty going to bed | 15 (18%) |
| Difficulty falling asleep | 19 (23%) |
| Unusually tired/sleepy during the day | 13 (16%) |
| Difficulty waking up | 13 (16%) |
| Very long or frequent naps | 6 (7%) |
| Frequent or prolonged awakenings at night | 17 (20%) |
| Sleepwalking or frequent nightmares | 5 (6%) |
| No regular bed time and wake time | 13 (16%) |
| Gastrointestinal problems | |
| Any GI condition | 43 (52%) |
| Constipation | 35 (42%) |
| Diarrhea | 15 (18%) |
| Gastro-esophageal reflux disease (GERD) | 10 (12%) |
| Psychiatric and behavioral conditions | |
| Any psychiatric disorder | 34 (41%) |
| Anxiety disorder | 4 (5%) |
| OCD | 1 (1%) |
| ADHD | 21 (25%) |
| Disruptive behavior disorder | 6 (7%) |
| Depressive disorder | 1 (1%) |
| Mood disorder | 1 (1%) |
| Self-injurious | 3 (4%) |
| Pica | 2 (2%) |
| Enuresis or encopresis | 2 (2%) |
Totals do not add up to 100% as some participants reported more than one condition in each category. No caregivers reported schizophrenia or psychosis.