LNs < 18 | 18 ≦ LNs < 25 | 25 ≦ LNs | ||||
---|---|---|---|---|---|---|
HR (95% CI) | P value | HR (95% CI) | P value | HR (95% CI) | P value | |
Overall survival | ||||||
With RT | 0.64 (0.49–0.84) | 0.001 | 0.73 (0.48–1.13) | 0.158 | 0.96 (0.75–1.24) | 0.769 |
Male | 0.86 (0.66–1.13) | 0.279 | 1.01 (0.64–1.60) | 0.961 | 1.08 (0.83–1.40) | 0.557 |
Age | 1.03 (1.02–1.05) | < 0.001 | 1.04 (1.02–1.06) | < 0.001 | 1.01 (1.002–1.02) | 0.022 |
Pathological T classification: T2 | 1.62 (1.23–2.12) | 0.001 | 1.89 (1.21–2.96) | 0.005 | 1.72 (1.34–2.22) | < 0.001 |
Differentiation: poorly | 1.11 (0.81–1.52) | 0.515 | 1.29 (0.80–2.10) | 0.301 | 1.18 (0.89–1.55) | 0.246 |
Site: oropharynx | 0.43 (0.30–0.62) | < 0.001 | 0.46 (0.26–0.82) | 0.008 | 0.34 (0.24–0.47) | < 0.001 |
Disease-specific survival | ||||||
With RT | 0.66 (0.45–0.97) | 0.033 | 1.07 (0.59–1.96) | 0.822 | 1.12 (0.81–1.56) | 0.491 |
Male | 0.74 (0.51–1.08) | 0.122 | 1.08 (0.58–2.01) | 0.820 | 1.01 (0.73–1.40) | 0.957 |
Age | 1.02 (1.001–1.03) | 0.043 | 1.03 (1.004–1.06) | 0.023 | 1.00 (0.99–1.01) | 0.715 |
Pathological T classification: T2 | 1.54 (1.06–2.25) | 0.025 | 2.27 (1.21–4.26) | 0.011 | 1.54 (1.12–2.12) | 0.008 |
Differentiation: poorly | 1.26 (0.82–1.93) | 0.297 | 1.68 (0.88–3.22) | 0.117 | 1.34 (0.95–1.89) | 0.098 |
Site: oropharynx | 0.33 (0.19–0.55) | < 0.001 | 0.19 (0.07–0.50) | 0.001 | 0.28 (0.18–0.44) | < 0.001 |