“…46 Eight studies were rated as adequate 14,16,19,37,43,45,48,51 and 4 were inadequate for generation of the allocation sequence, 17,39,46,47 and the method used for allocation sequence was unclear in 10 studies. 13,18,38,[40][41][42]44,49,50,52 Four studies were adequate, 14,43,45,48 14 studies were unclear, 13,16,18,19,37,38,[40][41][42]44,[49][50][51][52] and 4 studies were inadequate (as they used a method such as alternation. 17,39,46,47 ) for allocation concealment.…”