Table 1.
Characteristics of the population by body mass index category
| Normal weight (n=87,780) | Overweight (n=27,119) | Obese (n=23,784) | Morbidly obese (n=11,134) | |
|---|---|---|---|---|
| Mean age, years (SD) | 12.2 (5.4) | 12.4 (4.9) | 11.9 (4.7) | 10.3 (5.2) |
| Mean BMI percentile (SD) | 51.3 (23.7) | 90.6 (2.9) | 97.3 (1.2) | 99.5 (0.3) |
| Female gender | 33.2% | 34.2% | 34.8% | 33.1% |
| Race | ||||
| White | 64.2% | 62.0% | 61.6% | 58.1% |
| Black | 16.6% | 17.2% | 17.4% | 18.6% |
| Asian | 1.9% | 1.6% | 1.3% | 1.4% |
| Other/unknown | 17.4% | 19.1% | 19.8% | 21.9% |
| Hispanic ethnicity | 14.8% | 16.5% | 17.5% | 18.8% |
| Mechanism | ||||
| MVC or other transport | 37.8% | 38.8% | 39.5% | 37.0% |
| Fall | 32.3% | 30.8% | 31.6% | 36.1% |
| Firearm, suicide or assault | 10.0% | 9.6% | 8.3% | 6.8% |
| Struck by or against object | 11.0% | 11.6% | 10.9% | 9.6% |
| ISS; median (IQR) | 5 (4–10) | 5 (4–10) | 5 (4–9) | 5 (4–9) |
| Maximum AIS; median (IQR) | 2 (2–3) | 2 (2–3) | 2 (2–3) | 2 (2–3) |
| Hospital disposition | ||||
| Home | 86.8% | 85.4% | 84.8% | 84.6% |
| Intermediate care facility | 0.8% | 0.8% | 0.9% | 0.8% |
| Inpatient rehabilitation | 3.0% | 3.5% | 3.3% | 2.9% |
| Deceased or hospice | 1.2% | 1.3% | 1.2% | 1.1% |
| Medicaid or other government insurance | 33.5% | 35.4% | 37.0% | 42.0% |
Abbreviations: SD = standard deviation, BMI = body mass index, MVC = motor vehicle collision, IQR = interquartile range, ISS = Injury Severity Score, AIS = Abbreviated Injury Score