Table 4.

Factors significantly associated with receipt of adjuvant combined chemoradiation therapy on multivariable analysis among the subjects who underwent gastrectomy^a.

Covariate		Adjusted Odds Ratio (95% CI)	p-value
Age at diagnosis per year increase		0.87 (0.85, 0.90)	<0.0001
N category
N0		1.0	---
N1		3.69 (2.45, 5.56)	<0.0001
N2		4.26 (2.61, 6.96)	<0.0001
N3		7.44 (3.58, 15.47)	<0.0001
Charlson comorbidity score (per score increase)		0.87 (0.75, 1.00)	0.0515
Six month diagnosis block (per six month block increase)		1.10 (1.01, 1.21)	0.0284

Abbreviations: N=lymph node.

^aModel n=949.