Efficacy of SpyGlassTM-directed biopsy compared to brush cytology in obtaining adequate tissue for diagnosis in patients with biliary strictures

Table 4 Inflammatory activity in primary sclerosing cholangitis patients

		Brush				Total
		None	Low	Moderate	High
Biopsy	None	0	0	0	0	0
	Low	0	6	0	0	6
	Moderate	0	4	0	0	4
	High	1	6	0	2	9
Total		1	16	0	2	19

Signs of inflammation (by method) for the patients diagnosed with PSC. Bowker’s test for symmetry of contingency tables yielded a P-value of 0.088.