Table 1.

Basic information on patients (n = 43)

Variables	Data
Characteristics
Sex (Male/female)	34/9
Age (yr), mean ± SD	43.6 ± 2.7
Smoking (No/Yes)	23/20
Drinking (No/Yes)	26/17
Clinical data
Crohn’s disease/ulcerative colitis	27/16
Location
Crohn disease (L1/L2/L3/L4)	9/0/18/0
Ulcerative colitis (E1/E2/E3)	0/2/14
Severity of illness (Mild/moderate/severe)	10/21/12
Cause of surgery
Patient required	3
Non-response to intern medicine therapy	9
Medical required	31
Intestinal obstruction	18
Fistula	5
Definite diagnosis requires	1
Gastrointestinal bleeding	3
Intestinal stenosis	1
Gastrointestinal perforation	2
Carcinogenesis	1
Pre-op aminosalicylic acid (No/Yes)	8/35
Pre-op corticosteroids (No/Yes)	24/19
Pre-op immunosuppressive therapy (No/Yes)	34/9
Surgical procedures (Laparoscopic/open surgery)	14/29
Course (d), mean ± SD	73.6 ± 11.7
Indicators to be explored
Latent Epstein-Barr virus infection (Negative/positive)	33/10