“…The characteristics of them were listed in ( Supplementary Table 3 ). 7 studies compared PICC with CICC or Port ( n = 2872) [ 22 , 51 , 57 , 61 , 62 , 66 , 67 ], only 1 study involving mortality information [ 61 ], whereas 23 included studies which just displayed PICC without a comparison group ( n = 5824) [ 21 , 23 , 26 – 29 , 33 – 36 , 38 , 41 , 45 , 47 , 52 – 56 , 58 , 59 , 63 , 68 ]. 15 articles ( n = 6579) showed the details of CICC with pharmacological deep venous thrombosis (DVT) prophylaxis compared with placebo or other drugs, such as heparin drugs, warfarin and other thrombolytic drugs [ 24 , 25 , 30 – 32 , 37 , 39 , 40 , 42 – 44 , 46 , 49 , 50 , 60 ].…”