“…Thirty-five studies were cohort [8, 16, 23, 25–27, 30–34, 38–40, 42, 43, 45, 46, 48, 50, 51, 54, 55, 57, 60–66, 69, 71, 72] and 16 cross-sectional [24, 28, 29, 35–37, 41, 44, 47, 49, 52, 53, 56, 67, 68, 70]. Fourteen (27.4%) studies, classified as group 1 [16, 33, 35, 37, 39, 42, 49, 59, 60, 62, 68–71] used IADPSG; 6 (11.7%) as group 2 [24, 41, 43, 47, 50, 54], 11 (21.5%) as group 3 [28, 31, 55–58, 63–67], 2 (3.9%) as group 4 [36, 53], 11 (21.5%) as group 5 [23, 27, 30, 32, 38, 40, 44–46, 51, 52], 4 (7.8%) as group 6 [8, 29, 34, 48] and 3 (5.8%) as group 7 [25, 26, 61].…”