Table 5.

Multivariate analysis of histopathological predictors of lymph node metastases

Variables	OR (95 % CI)	p value
Tumor size
≤2 vs >2 cm	2.22 (1.31–3.78)	0.003*
Differentiation
I + I–II vs II + II–III + III	3.73 (1.54–9.06)	0.004*
Depth of invasion
m1 to m3 vs sm1 to sm3	3.99 (1.53–10.40)	0.005*
Angiolymphatic invasion
Absent vs present	4.64 (2.05–10.52)	<0.05*

CI confidence interval, OR odds ratio

*Statistically significant