“…Studies varied according to purpose, setting, and participants ( Table 3 13 , 15–17 , 37 , 39 , 44–62 ). Data came from a validation study, 13 cohort study, 44 intervention studies, 45 , 47 , 50 , 51 , 55 , 57 , 60 observational studies, 15–17 , 46 , 49 , 52 , 54 , 59 , 62 and analyses of national health survey data. 37 , 39 , 48 , 53 , 58 This review included 6 Canadian studies 15–17 , 49 , 53 , 56 , 59 and 18 US studies.…”