Table 2.

Results of AMSTAR-2 assessment of 12 included systematic reviews

		AMSTAR-2 item
	1				2 †		3	4 †		5			6	7 †			8		9a †		9b †		10	11a †		11b †
Author(Date)
Al-Saud (2018)		Yes	Yes	No		PY			Yes		Yes	No			PY	PY		n.a.		No		Yes			n.a.		No
Burgess (2019)		Yes	PY	Yes		No			Yes		Yes	No			PY	Yes		PY		No		No			Yes		No
Chmielewska (2017)		Yes	PY	No		PY			Yes		Yes	Yes			No	Yes		PY		No		n.a.			n.a.		n.a.
Dai (2021)		Yes	No	No		PY			Yes		No	No			No	PY		n.a.		No		No			n.a.		Yes
De Silva (2020)		Yes	Yes	Yes		PY			Yes		Yes	Yes			Yes	Yes		Yes		Yes		n.a.			n.a.		n.a.
EFSA Panel (2019)		Yes	PY	Yes		No			No		Yes	Yes			PY	Yes		Yes		No		Yes			Yes		Yes
Ierodiakonou (2016)		Yes	Yes	Yes		Yes			Yes		Yes	No			PY	PY		PY		No		Yes			Yes		Yes
Larson (2017)		Yes	No	No		PY			No		No	No			No	No		No		No		n.a.			n.a.		n.a.
Obbagy (2019)		Yes	PY	No		No			Yes		No	Yes			PY	PY		PY		Yes		n.a.			n.a.		n.a.
Smith (2016)		Yes	Yes	No		Yes			Yes		Yes	Yes			Yes	Yes		n.a.		Yes		No			n.a.		No
Waidyatillake (2018)		Yes	PY	Yes		No			Yes		Yes	NI			PY	Yes		PY		No		No			No		No
Yuan (2020)		Yes	Yes	No		PY			Yes		Yes	No			PY	Yes		PY		No		Yes			No		Yes

Abbreviations: n.a., not applicable; PY, partial yes, NI, no information; ^†indicates critical domain = flaw item