Table 3. Median household income & primary payer for ulcerative colitis patients with and without Helicobacter pylori infection.

n: sample size

		Ulcerative colitis without Helicobacter pylori		Ulcerative colitis with Helicobacter pylori		p-value
		Percentage	n	Percentage	n
Primary payer	Medicare	48.59	196,625	46.88	376	<0.05
	Medicaid	7	28,349	11.35	91
	Private insurance	37.62	152,246	31.3	251
	Self-pay	3.55	14,350	5.61	45
	No charge	0.4	1,602	0.5	4
	Other	2.84	11,504	4.36	35
Median household income	Lowest quartile	4.01	2,025	5.84	9	<0.05
	Second quartile	18.8	9,501	21.43	33
	Third quartile	24.97	12,618	28.57	44
	Highest quartile	52.21	26,382	44.16	68