Table 2.

Comparative characteristics of patients with evidence of any endoscopic inflammation (Mayo sub-score > 0, n=67), and those with no endoscopic inflammation (n=82)

Variable	Endo. Active	Endo. Normal
Mean Age in yrs (SEM)	48 (2)	54 (2)
Male (%)	49	50
Mean Disease Duration in yrs (SEM)	20 (3)	22 (3)
Clinical Remission > 6 months (%)	69	90
Steroid use in last 12 months (%)	21	6
Disease geography
Left-sided colitis (%)	51	54
Extensive colitis (%)	49	40
Current medications
Mesalamine (%)	82	72
Azathioprine / mercaptopurine (%)	21	16
Infliximab (%)	9	4
Laboratory Markers (SEM)
WCC (K/uL)	6.8 (0.2)	5.9 (0.2)
Hematocrit (%)	41 (0.4)	41 (0.4)
ESR (mm/hr)	11 (1)	11 (1)
CRP (mg/L)	4.8 (0.4)	2.4 (0.4)
Mean Histological score	1.7 (0.2)	1.6 (0.2)