From: Incidence and outcome for patients with occult lymph node involvement in T1 and T2 oral squamous cell carcinoma: a prospective study
Variable
Hazard ratio
95% CI
p
Age
1.04
1.02 to 1.05
< 0.0001*
Sex
1.11
0.73 to 1.71
= 0.622
Tumor stage
1.48
1.09 to 2.0
= 0.011*
N stage
1.68
1.04 to 2.74
= 0.034*
Recurrence
1.79
1.09 to 2.98
= 0.022*
Tumor grade
1.54
1.16 to 2.05
= 0.003*