Retrospective Study
Copyright ©The Author(s) 2021.
World J Gastrointest Oncol. Sep 15, 2021; 13(9): 1184-1195
Published online Sep 15, 2021. doi: 10.4251/wjgo.v13.i9.1184
Table 2 Univariate and multivariable analyses of prognostic factors for overall survival
VariableNo. of patients (%)Univariate analysis
Multivariate analysis
5-yr OS
P value
HR (95%CI)
P value
Gender (%)0.111
Male1588 (58.4)45.9%
Female1130 (41.6)49.1%
Age (%)< 0.001< 0.001
< 60 yr1217 (44.8)50.7%1 (Ref)
≥ 60 yr1501 (55.2)44.4%1.157 (1.360–1.692)< 0.001
Tumor size (%)< 0.0010.001
≤ 4.0 cm1200 (44.2)63.9%1 (Ref)
> 4.0 cm1302 (47.9)33.6%1.179 (1.038–1.339)0.011
Unknown216 (7.9)40.2%1.457 (1.191–1.782)< 0.001
Retrieved lymph nodes (%)0.074< 0.001
Adequate (n ≥ 16)1418 (52.2)48.9%1 (Ref)
Inadequate (n < 16)1300 (47.8)45.5%1.550 (1.380–1.740)< 0.001
AJCC 8th pT stage (%)< 0.001< 0.001
pT1690 (25.4)80.9%1 (Ref)
pT2329 (12.1)66.6%1.535 (1.193–1.975)0.001
pT3820 (30.2)38.5%2.882 (2.334–3.558)< 0.001
pT4a670 (24.7)23.4%3.415 (2.740–4.256)< 0.001
pT4b209 (7.7)18.6%4.452 (3.458–5.732)< 0.001
AJCC 8th pN stage (%)< 0.001< 0.001
pN01031 (37.9)71.6%1 (Ref)
pN1456 (16.8)46.9%1.467 (1.225–1.757)< 0.001
pN2507 (18.7)37.5%1.611 (1.353–1.919)< 0.001
pN3a512 (18.8)24.8%2.356 (1.976–2.809)< 0.001
pN3b212 (7.8)9.2%4.138 (3.306–5.181)< 0.001
Differentiation grade (%)0.0110.135
Well differentiation95 (3.5)69.4%1 (Ref)
Moderate differentiation483 (17.8)58.9%0.974 (0.649–1.462)0.898
Poor differentiation2054 (75.5)44.0%1.123 (0.755–1.670)0.566
Undifferentiation86 (3.2)35.6%1.415 (0.876–2.285)0.156
Modified Lauren classification (%)< 0.0010.013
Distal non-diffuse type654 (24.1)58.8%1 (Ref)
Proximal non-diffuse type463 (17.0)48.3%1.230 (1.033–1.466)0.020
Diffuse type1601 (58.9)42.4%1.246 (1.068–1.452)0.005