“…Six studies had reported trends in the prevalence of CMRFs over a time period [22,24,26,28,30,40], so that their weighted prevalence was considered as an overall prevalence. Among all publications, 15 studies were conducted in the American countries [9, 19, 20, 24-27, 29-32, 36, 38, 41, 51], 13 in Europe [22, 28, 33-35, 37, 39, 40, 44, 45, 48-50] and 9 in Asia [13,15,18,21,23,42,43,46,47]. Table 1 shows the general characteristics of the selected studies for the prevalence of MetS.…”