Table 2.

Univariate analysis of factors associated with local recurrence-free survival and disease-free survival

		local recurrence-free survival		disease-free survival
		3-years LRFS(%)	p	3-years DFS(%)	p
Age (years)	< 70	90.3	0.674	81.3	0.853
	≥ 70	89.4		80.6
Sex	male	86.3	0.036	79.5	0.446
	female	96.7		83.8
Tumor level	Middle (〉AV 4 cm)	94.6	0.237	86.2	0.347
	Low (≤ AV 4 cm)	84.7		74.9
Tumor size (cm)	< 2	83.3	0.241	74.3	0.279
	≥ 2	91.5		82.6
Tumor circumferential	Quarter	85.0	0.318	72.3	0.069
involvement	Half	93.4		89.4
	Full	100.0		83.3
CEA	< 5	91.6	0.278	82.9	0.271
	≥ 5	81.1		70.7
Treatment strategy	Organ-preserving attempt	87.9	0.129	79.6	0.429
	Radical surgery	96.2		84.9
Differentiation	w/d, m/d	90.6	0.024	81.4	0.145
	p/d, mucinous	50.0		50.0

LRFS local recurrence-free survival, DFS disease-free survival, CEA carcinoembryonic antigen, w/d well differentiated, m/d moderately differentiated, p/d poorly differentiated