Remission endpoints in ulcerative colitis: A systematic review

Table 1 Descriptors and intra- and inter-observer variation

Descriptor	Likert scale anchor points	Intra-observer variation(a weighted k)	Inter-observer variation (a weighted k)
Vascular pattern	Normal (1) Patchy loss (3) Obliterated (5)	0.61	0.42
Mucosal erythema	None (1)	0.43	0.35
	Light red (3)
	Dark red (5)
Mucosal surface (Granularity)	Normal (1)	0.45	0.34
	Granular (3)
	Nodular (5)
Mucosal oedema	None (1)	0.43	0.31
	Probable (3)
	Definite (5)
Mucopus	None (1)	0.47	0.4
	Some (3)
	Lots (5)
Bleeding	None (1)	0.57	0.37
	Mucosal (2)
	Luminal mild (3)
	Luminal moderate (4)
	Luminal severe (5)
Incidental friability	None (1)	0.49	0.4
	Mild (2)
	Moderate (3)
	Severe (4)
	Very severe (5)
Contact friability	None (1)	0.34	0.3
	Probable (3)
	Definite (5)
Erosions and ulcers	None (1)
	Erosions (2)	0.65	0.45
	Superficial ulcer (3)
	Deep ulcer (4)
Extent of erosions or ulcers	None (1)	0.6	0.42
	Limited (2)
	Substantial (3)
	Extensive (4)