Table 1.
Demographic Characteristics of the Sample
| % (n) Mean (std) |
Range | N | ||
|---|---|---|---|---|
| Male gender | 90.0% (108) | 120 | ||
| Caucasian, including multiracial | 92.5% (111) | 120 | ||
| Age at consent (years) | 11.8 (3.8) | 6–18 | 120 | |
| FSIQ | 84.0 (22.6) | 36–130 | 100 | |
| Vineland Standard Score | Composite | 72.3 (12.0) | 45–111 | 83 |
| Communication | 74.4 (14.6) | 44–129 | 83 | |
| Daily Living Skills | 77.4 (14.3) | 33–114 | 83 | |
| Socialization | 71.2 (13.3) | 40–103 | 83 | |
| ABC (calculated) | Irritability | 12.6 (10.4) | 0–42 | 117 |
| Lethargy | 10.2 (8.7) | 0–43 | 117 | |
| Stereotypy | 5.3 (4.9) | 0–21 | 117 | |
| Hyperactivity | 16.7 (11.9) | 0–46 | 117 | |
| Inappropriate speech | 3.8 (3.1) | 0–11 | 117 | |
| CSHQ total score | 45.5 (8.9) | 31–71 | 86 | |
| Upper GI tract score | 4.9 (5.4) | 0–24 | 120 | |
| Lower GI tract score | 17.9 (12.4) | 1–48 | 120 | |
| Rome III diagnoses | Functional constipation | 42.5% (51) | 120 | |
| Irritable bowel syndrome | 11.7% (14) | 120 | ||
| Lower abdominal pain associated with bowel symptoms | 9.2% (11) | 119 | ||
| Upper abdominal pain associated with bowel symptoms | 7.5% (9) | 120 | ||
| Aerophagia | 5.8% (7) | 120 | ||
| Abdominal migraine | 5.0% (6) | 119 | ||
| Functional abdominal pain | 3.3% (4) | 120 | ||
| Nonretentive fecal incontinence | 3.4% (4) | 119 |
(FSIQ: Full Scale Intelligence Quotient; ABC: Aberrant Behavior Checklist; CSHQ: The Children’s Sleep Habits Questionnaire.