“…Fifteen of the included studies in the systematic review had a non-randomised design [ 36 , 37 , 39 , 41 , 42 , 51 , 54 , 58 , 60–62 , 64 , 65 , 67 , 69 ]. Supplementary Table 3 shows that many of these scored well on method quality [ 36 , 37 , 39 , 41 , 42 , 51 , 58 , 60–62 , 65 , 69 ].…”