Table 2.

Median household income level according to census block group of trauma patients admitted from January 1, 1997, to December 31, 2007.

	Total, n	Median Income: Thousands of Dollars (Interquartile Range)	Less Than $20,000, %	$20,000–$40,000, %	Greater Than $40,000, %
Overall	4,935	31.2 (21.9, 40.9)	21.3	51.2	27.6
Insurance
Commercial	932	36.8 (26.5, 50.3)	12.6	43.9	43.6
Uninsured	3,359	28.0 (19.3, 37.5)	22.5	53.1	24.4
Public	644	28.0 (19.3,37.5)	27.5	51.6	21.0
Race
White	1,132	41.2 (31.9, 55.4)	6.3	39.1	54.7
Black	3,536	27.5 (19.6, 36.5)	26.6	55.0	18.4
Other	267	33.2 (27.6, 45.1)	14.2	52.4	33.3
Injury mechanism
Blunt	2,941	32.6 (23.8, 44.0)	18.0	48.2	33.8
Penetrating	1,994	28.1 (19.8, 36.5)	26.1	55.5	18.4