Table 1.
Demographics of study population
| Characteristic | n (%) |
|---|---|
| Gender | |
| Female | 3,758 (52.0) |
| Male | 3,517 (48.0) |
| Developmental age group, mean±SD (years) | 8.83±6.2 |
| Infant (<2 years) | 1,844 (25.3) |
| Toddler (2–5 years) | 654 (9.0) |
| Elementary (6–12 years) | 2,005 (27.6) |
| Adolescent (13–17 years) | 2,772 (38.1) |
| Race/ethnicity | |
| White | 5,048 (69.4) |
| Black/African American | 412 (5.7) |
| Hispanic | 747 (10.3) |
| Asian | 304 (4.2) |
| Other | 463 (6.3) |
| Not recorded or declined | 301 (4.1) |
| Primary language | |
| English | 6,373 (87.6) |
| Spanish | 644 (8.9) |
| Other | 258 (3.5) |
| Insurance type | |
| Commercial | 5,762 (79.2) |
| Medicaid | 1,282 (17.6) |
| Self-pay | 175 (2.4) |
| Other | 56 (0.8) |
| Median household income of patient ZIP code | |
| <$50,000 | 2,356 (32.4) |
| $50,000–74,999 | 2,205 (30.3) |
| $75,000–99,999 | 1,256 (17.3) |
| $100,000+ | 1,458 (20.0) |
| Location of imaging | |
| Main hospital campus | 5,043 (69.3) |
| Outpatient imaging center | 2,232 (30.7) |
| Imaging modality | |
| CT | 471 (6.5) |
| MRI | 2,668 (36.7) |
| Nuclear medicine | 575 (7.9) |
| Fluoroscopy | 350 (4.8) |
| Ultrasound | 3,211 (44.1) |
| Total | 7,275 (100%) |
SD standard deviation