Table 4.

Quality assessment according to Reichow et al. (2011).

	Essential quality indicators						Desirable quality indicators
	PART	IV	CC	DV	LRQ	STAT	RA	IOA	BR	FID	ATR	G/M	ES	SV	Quality of study
Crates and Spicer 2012	U	H	U	H	H	H	No	No	No	No	No	No	Yes	Yes	Weak
Dench 2005	U	A	U	A	H	U	No	No	No	No	No	No	No	No	Weak
Haberlin et al. 2012	U	H	H	H	H	A	No	Yes	No	No	No	Yes	Yes	Yes	Weak
Macdonald et al. 2018	H	H	A	H	H	H	No	Yes	No	No	No	Yes	No	Yes	Adequate
McGill et al. 2018	H	H	H	H	H	H	Yes	Yes	No	No	Yes	Yes	Yes	Yes	Strong
McKenzie et al. 2002	A	A	U	A	H	H	No	No	No	No	No	Yes	Yes	Yes	Weak
O’Dwyer et al. 2017	H	H	U	H	H	H	No	No	No	No	No	No	Yes	Yes	Weak
Reid et al. 2003	U	H	H	H	H	U	No	Yes	No	No	No	No	Yes	Yes	Weak
Wardale et al. 2014	A	H	U	H	H	H	No	Yes	No	No	No	No	Yes	Yes	Weak