“…The relationship between mortality and body composition abnormalities was investigated in 36 studies ( 4 , 37 , 40 , 42 , 43 , 46 , 47 , 48 , 50 , 53 , 54 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 70 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 ) ( Figure 3 , Supplementary Table 4 ). Out of 24 of these studies, 12 showed that skeletal muscle mass assessed by either CT ( 43 , 47 , 50 , 56 , 61 , 77 , 78 , 80 , 86 , 88 ) or US ( 42 , 46 ) was negatively associated with in-hospital mortality and 30-day mortality ( 4 , 40 , 42 , 43 , 46 , 47 , 50 , 53 , 54 , 56 , 57 , 58 , 60 , 61 ,…”