Table 1. Median lag times between onset of symptoms and diagnosis in CD and UC.

Follow-up time (years)
Group	No. of patients	Median	P25%	P75%	p-value
Total	911	3,6	0	9,6	<0,01
UC	483	4,6	0	10,3
CD	428	2,1	0	8,6
Non-zero follow-up time (years)
Total	589	7,9	3,9	12,2	0,86
UC	349	8	3,7	12,7
CD	240	7,7	4,2	11,9