TABLE 1

Demographics and Patient Characteristics

CharacteristicEntire Study Population, n (%)aWhite, n (%)Black, n (%)Hispanic, n (%)Pb
Total3063 (100)1410 (46.0)626 (20.4)544 (17.8)
Age
    <1 mo320 (10.5)176 (12.5)52 (8.3)51 (9.4)
    1–6 mo1995 (65.1)966 (68.5)431 (68.9)298 (54.8)<.001
    >6 mo748 (24.4)268 (19.0)143 (22.8)195 (35.9)
Male gender1816 (59.3)822 (58.3)372 (59.4)311 (57.2).74
Insurance
    Private646 (21.1)413 (29.3)44 (7.0)83 (15.3)
    Public1782 (58.2)660 (46.8)456 (72.8)379 (69.8)<.001
    Self78 (2.6)41 (2.9)7 (1.1)18 (3.3)
    Other/unknown557 (18.2)296 (21.0)119 (19.0)64 (11.8)
Type of TBI
    ICH with skull fracture1378 (45.0)602 (42.7)288 (46.0)258 (47.4).12
    ICH without skull fracture1685 (55.0)808 (57.3)338 (54.0)286 (52.6)
TBI severity categoryc
    Mild39 (1.3)10 (0.7)13 (2.1)10 (1.9)
    Moderate1760 (57.8)844 (60.2)355 (57.2)294 (54.3).013
    Severe1247 (40.9)549 (39.1)253 (40.7)237 (43.8)
Non-skull fractures present480 (15.7)209 (14.8)123 (19.7)76 (14.0).009
Retinal hemorrhages present701 (22.9)306 (21.7)168 (26.8)117 (21.5).027
Other injuries presentd266 (8.7)126 (8.9)68 (10.9)36 (6.6).040
  • ICH indicates intracranial hemorrhage.

  • a Among the study population, 2% was Asian and 14% was other/unknown race.

  • b P from χ2 analysis using white infants as the reference category.

  • c ICDMAP-90 was used to calculate ICD-9/AIS scores for the head region. ICD-9/AIS scores were categorized as mild (1–2), moderate (3), or severe (4–6).

  • d Other injuries included contusions (nonhead), burns, lacerations, and internal organ injuries.