“…Two studies [24] , [42] were rated as excellent, one study scored good [33] , six studies [32] , [39] , [44] , [45] , [48] , [50] scored fair and two studies [28] , [41] received a poor score. Hypotheses testing rating (Box F) was assessed in twelve studies [24] , [25] , [28] , [33] , [37] , [39] , [42] , [43] , [45] , [47] – [49] . Three studies were rated as fair [24] , [37] , [48] , eight studies received a poor score only [25] , [28] , [33] , [39] , [43] , [45] , [47] , [49] .…”