2. Non‐validated endoscopic scoring indices.

	Index	Reference
1	Beattie Score	Beattie 1996
2	Binder Score	Binder 1970
3	Carbonnel Score	Carbonnel 1994
4	Danielsson‐Löfberg Score	Danielsson 1987; Löfberg 1994
5	Dick Score	Dick 1964
6	Friedmann Score	Friedmann 1986
7	Froslie Endoscopic Score	Froslie 2007
8	Lemann Score	Lemann 1995
9	Levine Score	Levine 2002
10	Lindgren Score	Lindgren 2002
11	Maier Score	Maier 1988
12	McPhee Proctoscopic Grading Scale	McPhee 1987
13	Rutter Score	Rutter 2004
14	Saverymuttu Score	Saverymuttu 1986
15	Sigmoidoscopic Index	Hanauer 2004
16	Sigmoidoscopic Inflammation Grade Scale/Lemann Score	Lemann 1995
17	Truelove and Richards Sigmoidoscopic Appearance	Truelove 1956
18	van der Heide Index	van der Heide 1987