Assessment of perianal fistulizing Crohn’s disease activity with endoanal ultrasound: A retrospective cohort study

Table 3 Comparison of Crohn's disease activity index, perianal disease activity index scores among three groups, M (P25, P75)

Variables	Group 1 (n = 23)	Group 2 (n = 19)	Group 3 (n = 25)	Value	P value
CDAI	76.5 (56, 174.3) (1)	103 (44, 203) (1)	187 (137, 254.5) (2)	H = 12.893	0.002a
PDAI	1 (0, 2) (1)	1 (1, 4) (1)	6 (5, 7.5) (2)	H = 49.006	0.000a

^aP < 0.05, A statistically significant difference within different categories of a group.

For pairwise comparison within a group, different superscript letters (1,2) represent statistical differences between different categories, that is, P (1, 2) < 0.05, P (1, 1) > 0.05. PDAI: Perianal disease activity index; CDAI: Crohn's disease activity index.