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. 2015 Mar 5;34:1. doi: 10.1186/s40880-015-0006-x

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© Chen et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Survival analysis based on treatment [chemoradiotherapy (CRT) and radiotherapy (RT)] in matched pairs of patients with stages III–IV nasopharyngeal carcinoma and platelet count >300 × 10 ⁹ /L. A, overall survival. B, locoregional recurrence–free survival. C, distant metastasis–free survival. Hazards ratios (HRs) were calculated using the unadjusted Cox proportional hazards model. P values were calculated using the unadjusted log-rank test.