“…For the quality assessment of the 114 included papers based on the QATQS tool, 26 studies (23%) were classified as strong ( 73 , 76 , 77 , 79 – 81 , 104 – 111 , 113 – 116 , 118 , 121 – 127 ), 81 studies (71%) were moderate ( 4 , 15 – 26 , 28 , 29 , 31 – 49 , 52 – 58 , 60 , 62 – 72 , 74 , 75 , 78 , 82 – 91 , 93 – 103 , 112 , 117 , 119 , 120 ), and 7 (6%) were weak ( 27 , 30 , 50 , 51 , 59 , 61 , 92 ) ( Tables 3A–C ). The most common component rated as weak was study design (n=79, 69%) ( 4 , 15 – 72 , 84 – 103 ); only a few studies used a case-control design (n=2, 2%) ( 76 , 104 ) or cohort design (n=33, 29%) ( 73 – 75 , 77 – 83 , 105 – 127 ) with the majority being cross-sectional designs (n=79, 69%) ( 4 , 15 – 72 , 84 – 103 ).…”