“…Adequate methods of random sequence generation, allocation concealment and blinding of assessors were reported in three studies (Garrett et al, 1997;Jepsen et al, 2004;Queiroz et al, 2016). Adequate random sequence generation was also reported in five other studies (Blumenthal, 1993;Jaiswal & Deo, 2013;Leite et al, 2013;Maragos, Bissada, Wang, & Cole, 2002;Santana, Mattos, & Dyke, 2009), and blinding of assessors was performed in another four studies (Garrett et al, 1990;Hugoson et al, 1995;Karapataki et al, 1999;Santana et al, 2009). All studies were adequate with regard to reporting incomplete outcome data.…”