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. 2021 Sep 21;12:703286. doi: 10.3389/fneur.2021.703286

Figure 2.

Figure 2

(A) The Kaplan–Meier curves of the primary patency (left) and assisted primary patency (right) for left-side central venous lesions with (CVC group) or without (non-CVC group) previous left central venous catheter placement history. The CVC group is depicted with solid lines and the non-CVC group with the dotted line. The primary patency in the CVC group tends to be lower after 7 months, and this tendency lasted to 30 months (p = 0.269). The assisted primary patency in the non-CVC group tends to be lower after 30 months (p = 0.725). (B) The Kaplan–Meier curves of the primary patency (left) and assisted primary patency (right) for right-side central venous lesions with (CVC group) or without (non-CVC group) previous right-side central venous catheter placement history. The CVC group is depicted with solid lines and the non-CVC group with the dotted line. The primary patency in the CVC group tends to be lower after 7 months (p = 0.900), and no significant difference is revealed between the two groups in assisted primary patency (p = 0.815).