“…Basic information concerning the eligible studies are listed in Tables 1 and 2. From 2006 to 2019, a total of 10 prospective cohort studies [18-21, 25, 34-38], 6 case-control studies [39][40][41][42][43][44], one retrospective cohort study [22] and one cross-sectional study [45] were included in the meta-analysis of CRC incidence, and 8 prospective cohort studies [25][26][27][46][47][48][49], 2 retrospective cohort study [50,51] and 3 case-control studies [52][53][54] were included in the meta-analysis for CRC mortality. Thirteen studies were conducted in Asia [21,22,27,37,38,42,43,46,48,[50][51][52]54], eight were performed in Europe [20, 25, 34, 39-41, 44, 45], and the remaining studies were executed in the USA [18,19,26,35,36,47,49].…”