“…Table 1 summarises the study characteristics. There were 28 quantitative studies (20 cross-sectional studies including two with a qualitative interview component [ 17 , [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] ], five cohort studies including one with a qualitative survey component [ [44] , [45] , [46] , [47] , [48] ], two randomised trials [ 49 , 50 ] and one quasi-experimental study [ 51 ], and four qualitative studies (three interviews [ [52] , [53] , [54] ] and one focus group [ 55 ]). Among quantitative studies, the sample size ranged from 77 to 631,478.…”