Table 4. Multivariate analysis of the matched population for OS and CSS.

Characteristics		OS			CSS
		HR	95% CI	P-value	HR	95% CI	P-value
Age (yr)
	<45	Ref.			Ref.
	45–74	1.141	0.851–1.530	0.378	0.976	0.710–1.342	0.882
	>75	1.869	1.321–2.645	0	1.344	0.898–2.012	0.150
Sex
	Female	Ref.			Ref.
	Male	1.128	0.919–1.386	0.250	0.974	0.765–1.239	0.829
Marital status
	Married	Ref.			Ref.
	Single	1.042	0.834–1.302	0.717	0.989	0.760–1.286	0.933
Race
	White	Ref.			Ref.
	Black	1.266	0.925–1.732	0.141	1.262	0.871–1.830	0.218
	Other*	0.725	0.557–0.944	0.017	0.699	0.512–0.955	0.025
Registry
	Central	Ref.			Ref.
	East	0.776	0.551–1.094	0.148	0.699	0.471–1.037	0.075
	West	0.974	0.702–1.352	0.877	0.916	0.630–1.333	0.646
Location
	Proximal third	Ref.			Ref.
	Mid third	0.728	0.493–1.075	0.111	0.695	0.447–1.081	0.106
	Distal third	0.801	0.613–1.046	0.103	0.640	0.468–0.876	0.005
	Lesser curvature	0.807	0.577–1.128	0.209	0.672	0.452–1.001	0.050
	Greater curvature	1.065	0.725–1.565	0.748	0.825	0.519–1.311	0.415
	Overlapping lesion	0.896	0.645–1.247	0.516	0.920	0.639–1.325	0.654
Size
	≤5 cm	Ref.			Ref.
	>5 cm	1.202	0.990–1.460	0.063	1.372	1.092–1.724	0.007
NLNE
	<15	Ref.			Ref.
	≥15	0.711	0.587–0.861	0	0.778	0.621–0.975	0.029
Stage
	II	Ref.			Ref.
	III	1.866	1.522–2.287	0	1.889	1.484–2.405	0
Chemotherapy
	Chemotherapy−	Ref.			Ref.
	Chemotherapy+	0.935	0.674–1.296	0.686	1.127	0.742–1.711	0.576
Radiation
	Radiation−	Ref.			Ref.
	Radiation+	0.778	0.644–0.940	0.009	0.757	0.607–0.944	0.014

OS = overall survival; CSS = cancer-specific survival; HR = hazard ratio; CI = confidence interval; NLNE = number of lymph nodes examined.

^*American Indian/AK Native, Asian/Pacific Islander.