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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Head Neck. 2016 Jul 28;38(12):1739–1751. doi: 10.1002/hed.24532

Figure 4.

Figure 4

Results of a multivariate Cox model for survival endpoints for cohorts of patients with T3 larynx cancer who underwent total laryngectomy followed by post-operative radiotherapy (TL-PORT), larynx preservation with definitive radiotherapy alone (LP-RT), or larynx preservation with induction and/or concurrent chemoradiotherapy (LP-CRT). The vertical white lines on the colored boxplots represent hazard ratios (HRs); the colored boxplots themselves represent 95% confidence intervals (CIs). Statistical significance is indicated if a boxplot does not encroach upon a risk ratio of 1.0 (indicated by vertical dashed lines); red boxplots represent increased probability of endpoint occurrence, whereas green boxplots indicate reduced risk of endpoint occurrence. Overall survival (OS), local control (LC), locoregional control (LRC), ultimate LRC, freedom from distant disease (FDD), recurrence-free survival (RFS), cancer event–free survival (EFS), disease-specific survival (DSS), and non–cancer cause–specific survival (NCCSS) HRs were assessed for all patients (n=412).