Table 3.

Temporal Sequence Between First Diagnosis of Crohn’s Disease and First Diagnosis of Perianal Disease in 358 Patients in Taiwan.

Diagnosis of perianal disease	N = 358	Days between first Crohn’s disease diagnosis and first diagnosis of perianal disease
		Mean (SD)	Median (IQR)
More than 6 months before diagnosis of Crohn’s disease	170	1576 (1,188)	1237.5 (707-2,237)
Within 6 months before or after diagnosis of Crohn’s disease	74	57 (51)	44 (9-95)
More than 6 months after diagnosis of Crohn’s disease	114	1762 (1394)	1350.5 (606-2417)

IQR: interquartile range.