Diagnostic delay in inflammatory bowel disease increases the risk of intestinal surgery

Table 2 Baseline characteristics of ulcerative colitis patients n (%)

	Total(n = 130)	Delayed(n = 32)	Non-delayed(n = 98)	P value
Age at diagnosis (± SD)	38.9 ± 15.5	36.9 ± 13.2	39.6 ± 16.1	0.395
Male,	71 (54.6)	17 (53.1)	54 (55.1)	0.845
Family history	7 (5.4)	2 (6.3)	5 (5.1)	0.803
Symptom to diagnosis1, d	73.0 (35.0-186.5)	635 (360.5-1219)	50.5 (31.0-90.0)	0.000
Symptom to visit1, d	57.5	409.5	37.0	0.000
	(27.0-147.8)	(197.3-1183)	(15.8-70.0)
Visit to diagnosis1, d	7.00 (3.0-17.0)	10.0 (3.0-28.5)	6.00 (3.0-16.3)	0.215
Smoking	26 (20.2)	6 (18.8)	20 (20.6)	0.819
Chief complaints				0.55
Hematochezia	87 (66.9)	20 (62.5)	67 (68.4)
Diarrhea	31 (23.8)	10 (31.3)	21 (21.4)
Abdominal pain	9 (6.9)	2 (6.3)	7 (7.1)
Others	3 (2.3)	0 (0)	3 (3.1)
Location				0.594
Proctitis	52 (40.3)	12 (38.7)	40 (40.8)
Left sided	37 (28.7)	11 (35.5)	26 (26.5)
Pancolitis	40 (31.0)	8 (25.8)	32 (32.7)
Mayo score at diagnosis	5.60 ± 1.98	5.38 ± 1.95	5.67 ± 1.99	0.460
Severity2				0.748
Remission (0-2)	2 (1.5)	1 (3.1)	1 (1.0)
Mild (3-5)	53 (40.8)	14 (43.8)	39 (39.8)
Moderate (6-10)	74 (56.9)	17 (53.1)	57 (58.2)
Severe (11-12)	1 (0.8)	0 (0)	1 (1.0)
CRP at diagnosis, (± SD)	1.82 ± 3.88	1.85 ± 3.96	1.82 ± 3.88	0.970

¹The duration was expressed as median (interquartile range);

²The severity was classified according to the Mayo score.