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. 2020 Jan 21;9(2):295. doi: 10.3390/jcm9020295

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Kaplan–Meier survival curves of 100 patients with OSCC. (A) The cumulative survival for patients with none or a low degree (0–2) of LIF staining was significantly higher than that for patients with a high degree (3–4). (B) Overall survival was significantly lower in patients with a larger tumor size (T3 + T4) than in those with smaller tumor size (T1 + T2) (p = 0.002). (C) Overall survival was significantly higher in patients without lymph node metastasis (N0) than in those with an advanced status of lymph node metastasis (N2 + N3) (p = 0.014). (D) Overall survival was significantly shorter in patients with advanced-stage (stages 3–4) tumors than in those with earlier-stage (stages 1–2) tumors (p = 0.011). The duration of survival was measured from the beginning of treatment to the time of death (complete) or the last follow-up (censored).