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. 2019 Jul 12;98(28):e16137. doi: 10.1097/MD.0000000000016137

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Copyright © 2019 the Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0

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OS comparison among 3 groups. There was no difference of OS in the elderly NSCLC patients at early stage among U-VATS group, M-VATS group, and open thoracotomy group, nor between any of the 2 groups. Kaplan–Meier curve was used to show the survival profiles, and log-rank test was applied for comparison of OS among 3 groups. P < .05 was considered significant. M-VATS = multiport video assisted thoracoscopic surgery, NSCLC = non-small cell lung cancer, OS = overall survival, U-VATS = uniport video assisted thoracoscopic surgery.