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. 2015 Aug 25;10:181. doi: 10.1186/s13014-015-0490-9

Table 2.

Univariate analysis for three- year LFFS, DMFS, and OS

Parameter LFFS (%) DMFS (%) OS (%)
Age
 ≦51 61.3 76.1 58.4
  > 51 79.9 88.0 63.4
p = 0.02 p = 0.13 p = 0.76
Tumor site
 Oral cavity 64.8 81.7 56.4
 others 88.0 82.9 70.4
p = 0.06 p = 0.46 p = 0.28
Stage
 I + II 80.2 100 71.5
 III + IV 68.3 76.6 57.4
p = 0.23 p = 0.04 p = 0.13
Margin
 Positive 64.6 89.5 41.0
 Negative 73.3 79.2 67.6
p = 0.85 p = 0.14 p = 0.05
Extracapsular extension
 Positive 68.7 77.0 64.0
 Negative 70.8 83.4 58.6
p = 0.76 p = 0.93 p = 0.11
LNR for all patients
  < 0.1 76.1 87.2 67.0
 ≧0.1 54.9 66.4 41.0
p = 0.015 p = 0.06 p = 0.004
LNR for lymph node-positive patients
  < 0.06 75.6 94.1 77.8
 0.06–0.17 74.8 71.1 59.7
  > 0.17 24.2 57.3 23.5
p = 0.011 p = 0.18 p = 0.003
Absolute number of lymph node metastasis
 1 60.0 75.8 48.5
  > 1 66.4 76.6 58.0
p = 0.46 p = 0.96 p = 0.28

OS overall survival, LFFS local failure-free survival, DMFS distant metastasis-free survival, LNR lymph node ratio