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. 2019 May 13;6(1):e000955. doi: 10.1136/openhrt-2018-000955

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Kaplan-Meier survival curves depicting time to revascularisation as a function of peripheral artery disease (PAD) score. Patients in the positive group had a score greater than or equal to the optimal cut-off for the score, which was determined to be 5.607 using the optimal Youden's index (with the model’s output rescaled to the range of 0–10). Patients in the negative group had a score below 5.607. DM, diabetes mellitus.