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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Cancer Causes Control. 2016 Nov 1;27(12):1429–1435. doi: 10.1007/s10552-016-0821-7

Fig. 1. Adjusted Kaplan-Meier plot for time to first recurrence by smoking status.

Fig. 1

* Adjusted for age at diagnosis (<55, 56–65, 66–75, >75), stage of disease (II, III, IV), and treatment (immunotherapy, chemotherapy, radiation, combination, unknown). † Former smokers with ≥30 pack-years compared to never smokers. †† Current smokers with ≥40 pack-years compared to never smokers. ‡ Comparing all smoking levels (never, former with <30 pack-years, former with ≥30 pack-years, current with <40 pack-years, current with ≥40 pack-years).