Table 2. Comparison of patient characteristics between the MES 0 and MES 1 groups.

Characteristics (n = 166)	MES 0 (n = 91)	MES 1 (n = 75)	P
Mean age (years)	50.1 ± 15.9	46.7 ± 14.5	NS
Sex (male)	45.1 % (n = 41)	58.7 % (n = 44)	NS
Affected area			NS
Proctitis type (E1)	15.4 % (n = 14)	14.7 % (n = 11)
Left-sided type (E2)	36.3 % (n = 33)	29.3 % (n = 22)
Pancolitis type (E3)	48.4 % (n = 44)	56.0 % (n = 42)
Histological classification
Matts 1,2 (HH)	91.2 % (n = 83)	52.0 %(n = 39)	NS
Matts 3,4,5 (NHH)	8.8 % (n = 8)	48.0 % (n = 36)	NS
Mean disease duration (months)	140.4 ± 84.1	158.4 ± 114.8	NS
Smoking rate	2.2 % (n = 2)	4.0 % (n = 3)	NS

Values are presented as mean ± standard deviation or % (n). MES, Mayo endoscopic subscore; NS, not significant; HH, histological healing; NHH, non-histological healing.