Table 1.

Characteristics of pediatric patients with concussions recorded in NHAMCS for the years 2002-2006.

		Number of Observations (n=230)	Estimated Percent Patient Encounters (%)*
Age	< 1 year	7	4
	1-4 years	31	15
	5-9	34	14
	10-14	64	28
	15-19	94	40
Sex	Male	154	69
	Female	76	31
Race	White	197	84
	Non-White	33	16
Ethnicity	Hispanic	29	9
	Non-Hispanic	191	88
	Unknown	10	3
Insurance Type	Private	135	58
	Medicaid	43	21
	Self	26	8
	All others	26	13
Geographic Location	Northeast		19
	South	70	38
	Midwest	47	22
	West	59	21
	Metropolitan	191	80
	Non-Metropolitan	39	20
Type of Institution	Teaching Hospital	25	8
	Non-Teaching	205	92
	Pediatric Hospital	17	6
	Non-Pediatric Hospital	213	94
Mechanism of concussion	MVC	40	20
	Bicycle-related	11	6
	Hit by Car	4	2
	Sport	70	30
	Fall from Height	24	9
	Fall on Stairs	2	2
	Fall from Standing	21	9
	Assault	9	4
	Other	34	13
	Unknown/Missing	15	5
Clinical Characteristics	Additional Head Injuries	41	18
	Additional Injuries	29	14
Clinical Decisions	Head Imaging Obtained	154	69
	Admitted to the Hospital	14	5

^*Percent patient encounter calculated by survey-weighted methodology