“…The meta-analysis included 38 studies that revealed the prevalence and contributing factors of TD among T2DM patients. Among all the papers, 6 of them were from Africa [ 3 , 31 , 35 , 43 , 45 , 51 ], 28 were from Asia [ 3 , 7 – 9 , 11 , 14 , 16 , 23 , 24 , 29 , 32 – 34 , 37 – 42 , 44 , 46 , 47 , 49 , 50 , 52 – 58 ], 1 was from Australia [ 48 ], 2 were from Europe [ 10 , 30 ], and 1 was from South America [ 22 ]. Regarding the study design, 9 were case–control, 1 case series, 3 were cohort, 21 were cross-sectional, 1 prospective, and 3 retrospective studies.…”