Table 1.
Participant characteristics at initial evaluation
| Variable | n | Percent | Range | Mean | SD |
| Age (yr) | 392 | 8.02-20.52 | 13.84 | 2.70 | |
| Pain hx (yr) | 288 | 0-17 | 2.44 | 3.49 | |
| Sex | |||||
| Male | 103 | 26.7 | |||
| Female | 283 | 73.3 | |||
| Ethnicity | |||||
| White | 342 | 87.5 | |||
| Black or Afr Am | 32 | 8.2 | |||
| Amer Indian or Alaskan Native | 3 | 0.8 | |||
| Asian Indian | 1 | 0.3 | |||
| Chinese | 2 | 0.5 | |||
| Filipino | 1 | 0.3 | |||
| Japanese | 0 | 0 | |||
| Korean | 1 | 0.3 | |||
| Vietnamese | 1 | 0.3 | |||
| Other Asian | 0 | 0 | |||
| Native Hawaiian | 0 | 0 | |||
| Guamanian or Chamorro | 0 | 0 | |||
| Samoan | 0 | 0 | |||
| Other Pacific Islander | 1 | 0.3 | |||
| Other | 12 | 3.1 | |||
| “Prefer not to answer” | 7 | 1.8 | |||
| FD | 341 | 88.3 | |||
| IBS | 139 | 36.0 | |||
| FAP | 14 | 3.6 | |||
| GERD | 41 | 10.6 | |||
| Functional constipation | 3 | 0.8 | |||
| Functional nausea | 0 | 0 | |||
| Abdominal migraine | 0 | 0 | |||
| Eosinophilia | 301 | 78.0 |
FD: Functional dyspepsia; IBS: Irritable bowel syndrome; FAP: Functional abdominal pain; GERD: Gastroesophageal reflux disease.