Table 3. Final multivariate analysis of survival prediction.

Characteristic	Comparison	HR	95% CI	p
Collagen alignment	High vs Low	2.20	1.63 - 4.14	0.0153
Gender	Female vs Male	1.91	1.24 - 2.96	0.0036
Adjuvant therapy	No vs Yes	1.45	0.94 - 2.53	0.0941
Age (yr)	>65 vs ≤65	1.25	0.80 - 1.94	0.3310
Margin	R1 vs R0	1.02	0.60 - 1.72	0.9561
Grade	G2/G3 vs G1	1.41	0.83 - 2.39	0.2085
pT	T3/T4 vs T1/T2	1.22	0.75 - 2.00	0.4224
pN	N1 vs N0	1.08	0.67 - 1.74	0.7578