Table 1.

Quality scores of articles selected based on proposed evaluation scale.

Authors and year	Sample	Study design	Control group	Blinding	Repetition of experiment	Total
Wilson et al., 1995 [19]	0	1	1	0	0	2
Wilson et al., 1996 [20]	0	1	0	0	0	1
Wood et al., 1999 [21]	0	2	1	0	0	3
O'Neill et al., 2002 [22]	0	1	1	0	0	2
Zanin et al., 2005 [16]	0	1	1	0	0	2
Wood et al., 2006 [23]	0	1	1	0	1	3
Zanin et al., 2006 [24]	1	1	1	0	0	3
Müller et al., 2007 [25]	0	1	1	0	1	3
Steinberg et al., 2008 [26]	0	1	1	0	1	3
Lima et al., 2009 [27]	1	1	1	1	0	4
Schneider et al., 2012 [14]	0	1	1	0	0	2
Chen et al., 2012 [28]	0	1	1	0	0	2
Silva et al., 2012 [29]	0	1	1	0	1	3
Teixeira et al., 2012 [30]	1	2	1	1	0	5
Pereira et al., 2013 [31]	0	1	1	0	0	2
Al-Ahmad et al., 2013 [32]	0	2	1	0	1	4
Araújo et al., 2014 [33]	0	1	1	0	1	3