“…Eight of them are case-control by design [9,11,[25][26][27][28][29][30] where the rest are cross-sectional [10,12,14,15,[31][32][33]. Five of the included studies are from Amhara region [9,10,14,25,33] four from Oromia [12,28,29,31], four from southern nation nationalities and peoples of the region (SNNPR) [26,27,30,32], one from Harari [15] , and one Tigray [11]. The total sample size of original studies included in this meta-analysis is 4,895.…”