Table 4.

Quality assessment

	Quantitative randomised Cross-over					Quantitative non-randomised					Quantitative descriptive					Quality
References	2.1	2.2	2.3	2.4	2.5	3.1	3.2	3.3	3.4	3.5	4.1	4.2	4.3	4.4	4.5
Mileman 2002						*	*	*	-	-						medium
Diniz 2010						-	*	*	-	*						medium
Lazarchik 1995						-	*	*	-	*						medium
Castner 2020						-	*	*	-	*						medium
Vizzotto 2015						-	-	*	-	*						low
Bussaneli 2015						-	*	*	Can't tell	*						medium
Plessas 2019	*	*	*	-	Can’t tell											medium
Milgrom 1975											*	*	Can't tell	*	-	medium

1*meets 20% of MMAT criteria

2**meets 40% of MMAT criteria

3***meets 60% of MMAT criteria

4****meets 80% of MMAT criteria

5*****meets 100%of MMAT criteria

20-40%=low quality; 60–80% = medium quality; 80–100% = high quality