Table 5.

Multivariate analysis of overall survival with Cox proportional hazard model stratified by stage in patients receiving chemotherapy and radiation.

	Stages I–II (N = 302)				Stage III (N = 417)
	HR	95% CI		P-value	HR	95% CI		P-value
Age, years
65-74 versus <65	1.28	0.88	1.88	.196	1.08	0.81	1.44	.612
75+ versus <65	1.32	0.86	2.02	.209	1.12	0.79	1.58	.534
Sex
Female versus male	1.07	0.78	1.48	.665	0.98	0.76	1.26	.862
Race
Other versus white	0.99	0.64	1.51	.951	1.05	0.75	1.47	.783
Diagnosis year
2013-2016 versus 2004-2008	0.79	0.56	1.12	.181	0.91	0.69	1.21	.529
2009-2012 versus 2004-2008	0.74	0.49	1.10	.130	0.87	0.65	1.18	.368
Site
Anus versus colon	1.81	0.52	6.27	.348	1.24	0.62	2.51	.543
Esophagus versus colon	2.20	0.67	7.21	.195	0.88	0.45	1.74	.713
Gallbladder versus colon	1.61	0.41	6.25	.496	0.42	0.14	1.26	.120
Pancreas versus colon	2.28	0.69	7.55	.176	1.06	0.46	2.46	.887
Rectum versus colon	1.24	0.38	4.10	.724	0.70	0.37	1.35	.286
Gastric versus colon	1.57	0.44	5.58	.485	0.63	0.31	1.26	.190
Morphology
Large cell and others versus small cell	1.13	0.81	1.57	.476	1.34	1.04	1.74	.027
Charlson Comorbidity
1 versus none	0.99	0.65	1.50	.949	1.40	1.02	1.93	.035
2+ versus none	1.44	0.81	2.57	.215	1.53	0.92	2.53	.100
Surgery
Yes versus no	0.63	0.44	0.91	.012	0.77	0.59	1.01	.058