“…A total of 39 publications, including 170 605 participants, met inclusion criteria ( Figure 1 ). Of these 39 studies, 8 were RCTs, 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 1 was a quasi-experimental study, 33 12 were before-after studies without controls, 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 9 were before-after studies with controls, 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 1 was a time-series study, 55 and 8 were cross-sectional studies. 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 Thirty-four studies were of interventions in the US, and 5 were of interventions in Canada.…”