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. 2020 Nov 24;32(2):276–283. doi: 10.1093/icvts/ivaa250

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© The Author(s) 2020. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.

This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)

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Figure 2. — Kaplan–Meier survival curve analysis of chronic postoperative pain after video-assisted thoracoscopic surgery according to the patients with (black) and without (grey) adjuvant chemotherapy before (A) and after (B) propensity score matching. The results of log-rank test between the groups are shown on the figure. The 95% confidence interval of each group appears as a shaded area. CPP: chronic postoperative pain.