Efficacy and adverse events of cold vs hot polypectomy: A meta-analysis

Table 1 Quality assessment of bias in included studies

Ref.	Risk of bias						Jadad score
	Adequacy of random sequence generation	Allocation concealment	Blinding of the participants, personnel and outcome assessors	Blind outcome assessment	Incomplete outcome data	Selective outcome reporting	Details of randomization	Blinding procedures	Information regarding withdrawals	Total score
Horiuchi et al[15], 2010	High	High	Unclear	Unclear	Unclear	Low	1	1	0	2
Ichise et al[16], 2011	Unclear	Low	Unclear	Unclear	Unclear	Low	2	1	0	3
Paspatis et al[17], 2011	Low	Unclear	Unclear	Unclear	Unclear	Low	2	0	1	3
Aslan et al[18], 2013	High	High	Unclear	Unclear	High	Unclear	1	1	0	2
Horiuchi et al[21], 2013	Low	Low	Unclear	Unclear	Unclear	Unclear	2	2	0	4
Gomez et al[20], 2014	Low	Low	Unclear	Unclear	Low	Unclear	2	1	1	3