Human-derived acellular dermal matrix may be an alternative to autologous grafts in tympanic membrane reconstruction: systematic review and meta-analysis

Table 4 Risk of bias assessment of randomised controlled studies

stduy	Selection bias		Performance bias	Detection bias	Attrition bias	Reporting bias	Other bias
stduy	Item 1	Item 2	Item 3	Item 4	Item 5	Item 6	Item 7
Lee 2018 [22]	Low risk	Unclear risk	Unclear risk	Unclear risk	Low risk	Unclear risk	Unclear risk
Li 2014 [23]	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Low risk	Unclear risk	Unclear risk
Raj 2011 [24]	Unclear risk	Unclear risk	High risk	High risk	Low risk	Unclear risk	Unclear risk
Liao 2017 [25]	Unclear risk	Unclear risk	Unclear risk	Unclear risk	Low risk	Unclear risk	Unclear risk

ISSN: 1916-0216