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. 2015 May 20;7(1):61–65. doi: 10.1111/1759-7714.12275

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© 2015 The Authors. Thoracic Cancer published by China Lung Oncology Group and Wiley Publishing Asia Pty Ltd.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Kaplan–Meier survival curves of the three terminal subgroups generated from classification and regression tree analysis. Group: () 1.00, () 3.00, () 4.00, () 1.00‐censored, () 3.00‐cnesored, () 4.00‐censored. Node 1: body mass index (BMI) less than or equal to 20.768 kg/m². Node 3: BMI greater than 20.768 kg/m² and without exon 19 mutation. Node 4: BMI greater than 20.768 kg/m² and with exon 19 mutation.

Inline graphic — Kaplan–Meier survival curves of the three terminal subgroups generated from classification and regression tree analysis. Group: () 1.00, () 3.00, () 4.00, () 1.00‐censored, () 3.00‐cnesored, () 4.00‐censored. Node 1: body mass index (BMI) less than or equal to 20.768 kg/m². Node 3: BMI greater than 20.768 kg/m² and without exon 19 mutation. Node 4: BMI greater than 20.768 kg/m² and with exon 19 mutation.