Fig. 6
From: Clinical outcomes of transoral videolaryngoscopic surgery for hypopharyngeal and supraglottic cancer
Kaplan-Meier survival curves. a Cause-specific survival (CSS, red) and overall survival (OS, blue) of all patients (n = 72). The 5-year CSS and OS rates were 87.3 and 77.9%, respectively. b Larynx-preserved CSS (LP-CSS, green) and loco-regional controlled CSS (LRC-CSS, orange) of all patients. The 5-year LP-CSS and LRC-CSS rates were 86.0 and 88.0%, respectively. c CSS according to N stage (N0-1 [n = 48] vs N2-3 [n = 24]). The 5-year CSS rates were 96.4% for N0-1 (pink) and 69.2% for N2-3 (light blue) (generalized Wilcoxon test, P = 0.0003). d OS according to N stage. The 5-year OS rates were 87.3% for N0-1 (pink) and 59.9% for N2-3 (light blue) (generalized Wilcoxon test, P = 0.005)