“…In total, there were 19 studies using the WHO 1999 classification, of which eight studies focused on Caucasians [ 44 , 47 , 76 , 77 , 79 , 80 , 81 , 84 ] and 11 on Asians [ 61 , 62 , 64 , 65 , 66 , 67 , 68 , 69 , 71 , 74 , 81 ] ( Table 2 ). Fourteen studies utilised the ADA 2003 classification, with seven Caucasian [ 44 , 47 , 75 , 77 , 78 , 79 , 80 ] and seven Asian studies [ 61 , 63 , 65 , 68 , 70 , 72 , 73 ] ( Table 3 ). There were a total of 32,204 individuals classified with prediabetes from 19 studies ( Table 2 ), of which 10,999 were Caucasian (eight studies) and 21,205 were Asian (11 studies), based on the WHO 1999 classification; and 27,112 individuals classified with prediabetes from 14 studies ( Table 3 ), of which 11,744 were Caucasian (seven studies) and 15,765 were Asian (seven studies) based on the ADA 2003 classification.…”