Table 5.

Multivariable predictors of all cause mortality among the subjects who received either combined chemoradiation therapy or no adjuvant therapy^a.

Covariate		Hazard Ratio (95% CI)	p-value
Treatment
No adjuvant therapy		1.0	---
Chemotherapy and radiation therapy		0.90 (0.72, 1.12)	0.3453
Age at diagnosis (per year increase)		1.03 (1.01, 1.04)	0.0002
Gender
Male		1.02 (0.85, 1.23)	0.8396
Female		1.0	---
Race
White		1.0	---
Asian		0.73 (0.54, 0.97)	0.0327
Other (including black)		1.13 (0.84, 1.53)	0.4243
SES Quintile (per quintile increase)		1.00 (0.93, 1.06)	0.9277
Six month diagnosis block (per block increase)		0.97 (0.92, 1.03)	0.3190
T category
T1		1.0	---
T2		1.27 (0.81, 1.98)	0.3023
T3 orT4		1.60 (1.01, 2.55)	0.0472
N category
N0		1.0	---
N1		2.04 (1.62, 2.57)	<0.0001
N2		3.48 (2.62, 4.63)	<0.0001
N3		3.73 (2.38, 5.84)	<0.0001
Grade
1		1.0	---
2		1.44 (0.75, 2.75)	0.2720
3/4		1.98 (1.05, 3.75)	0.0355
Charlson comorbidity score (per score increase)		1.08 (1.00, 1.16)	0.0411
Gastrectomy at teaching hospital
Yes		0.90 (0.74, 1.08)	0.2555
No		1.0	---
Distance to RT facility (per additional mile)		1.00 (1.00, 1.00)	0.9661
SEER Region
Northeast		0.96 (0.76, 1.22)	0.7536
South		1.18 (0.89, 1.59)	0.2548
Midwest		1.15 (0.83, 1.58)	0.3984
West		1.0	---

^aModel n=809.

Abbreviations: SES=socioeconomic status, T=tumor, N=lymph node, RT=radiation therapy.