Table 3.

Descriptive data of assessment tools

	Tool		Abb	Year	Items	Versions	Score range	Original or modified
Global Rating Scale
1		Sidhu et al. [17] Self-assessment scale	SAS	2006	11	1	11–55	Previously validated GOALS and OSATS
2		Wohaibi et al. [18] OpRate	OpRate	2007	6	1	1–4 (m)	Original
3		Niitsu et al. [32] OSATS	OSATS	2012	7	1	7–35	Previously validated OSATS
4		Jenkins et al. [19] GMAS/DOPS	GMAS	2016	12	1	0–45	Original GMAS and previously validated DOPS
5		Watanabe et al. [20] IRT-GOALS	IRT-GOALS	2017	5	1	5–25	Previously validated GOALS
Error-based rating scale
6		Miskovic et al. [8] OCHRA	OCHRA	2012	3	1	3–25	Previously validated GAS, and OCHRA
Procedure-specific tool
7		Dath. et al. [33] OCRS	OCRS	2003	7	1	1–5(m)	Original OCRS and previously validated OSATS
8		Sarker et al. [21, 22]* Technical skills assessment tool for laparoscopic colectomy	TSALC	2010–2011	7–9	3%	35–45	Original
9		Palter et al. [7, 23]* Procedure-specific evaluation tools	PSET	2011–2012	18 or 18/19	2 &	50–80 or 50–90	Original
10		Miskovic et al. [24–26, 34]* GAS-tool	GAS	2011	12	1	1–72	Original
11		Miskovic et al. [1, 27, 28]* CAT-tool	CAT	2013	16	1	1–4 (m)	Original
12		Glarner et al. [29] Comprehensive assessment Tool	CT	2013	8	1	1–5 (m)	Original CT and modified OSATS and NOTSS
13		Champagne et al. [2, 30]* ASCRS Tool	ASCRS	2017	9	1	1–5 (m)	Previously validated OSATS and OCHRA
14		Nakayama et al. [31] ASLAC score	ASLAC	2020	35	1	NR	Original

Abb: Abbreviation Year: year of publication Items: number of statements evaluated on a rating scale. If the tool includes general, non-technical and procedure-specific items, only the procedure-specific items will be considered Versions: number of versions available for laparoscopic colon procedures NR: not reported (m) mean

^*Only number from the first validation paper has been reported