Table 2 Baseline data of 483 patients with ulcerative colitis

Gender

 Male/Female

266/218 (1.22:1)

Environment

 Rural, n (%)

209 (43.27)

 Urban, n (%)

274 (56.73)

Occupational physical activity

 Mild, n (%)

281 (58.18)

 Moderate, n (%)

95 (19.67)

 Serve, n (%)

107 (22.15)

Age, years, mean ± SD

49.06 ± 14.92

Age at diagnosis, years, mean ± SD

45.98 ± 15.09

Age at diagnosis according to Montreal classification, n (%)

 <17 years

4 (0.83)

 17-40 years

129 (26.71)

 >40 years

350 (72.46)

Localization of disease according to Montreal classification, n (%)

 E1  Rectum

90 (18.63)

 E2  Left colon

160 (33.13)

 E3  Extensive colon

233 (48.24)

Severity of intestinal inflammation, n (%)

 Mild

154 (31.88)

 Moderate

180 (37.27)

 Severe

149 (30.85)

Mayo Score, n (%)

 ≦2 and single event ≦1  Clinical remission

179 (37.06)

  3-5         Mild activity

11 (2.28)

  6-10         Moderate activity

136 (28.16)

  11-12        Severe activity

157 (32.50)