Table 3. Univariate and multivariate analysis for factors associated with overall survival.

Variable	N  = 185	Univariate analysis		Multivariate analysis
		HR (95% CI)	p -Value	HR (95% CI)	p -Value
Age (y)
<50	65 (35.1%)	1.00	0.124	–	–
≥50	120 (64.9%)	1.85 (0.85–4.03)		–
pT stage
pT0 + pT1 + pT2	42 (22.7%)	1.00	0.018	1.00	0.152
pT3 + pT4	143 (77.3%)	3.53 (1.24–9.99)		2.30 (0.74–7.18)
pN stage
pN0	55 (29.7%)	1.00	0.056	1.00	0.773
pN1 + pN2 + pN3	130 (70.3%)	2.08 (0.98–4.42)		1.13 (0.49–2.62)
Grade of the tumor
Poorly differentiated	111 (60.0%)	2.17 (1.02–4.60)	0.044	1.90 (0.86–4.18)	0.111
Well/moderately differentiated	74 (40.0%)	1.00		1.00
Omental metastasis
Yes	20 (10.8%)	2.89 (1.26–6.65)	0.012	1.90 (0.80–4.43)	0.146
No	165 (89.2%)	1.00		1.00
Perioperative chemotherapy
Yes	71 (38.4%)	0.45 (0.22–0.92)	0.030	0.47 (0.22–0.98)	0.046
No	114 (61.6%)	1.00		1.00

Note: Values expressed as n (%).