Table 3. Univariate 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	1.012	0.76–1.34	0.932	0.884	0.65–1.20	0.428
	>75	1.803	1.29–2.52	0.001	1.193	0.81–1.76	0.374
Sex
	Female	Ref.			Ref.
	Male	1.081	0.89–1.31	0.419	1.013	0.81–1.26	0.905
Marital status
	Married	Ref.			Ref.
	Single	1.134	0.92–1.39	0.232	1.044	0.82–1.33	0.728
Race
	White	Ref.			Ref.
	Black	1.255	0.96–1.64	0.097	1.239	0.91–1.69	0.179
	Other*	0.720	0.56–0.93	0.012	0.717	0.53–0.96	0.027
Registry
	Central	Ref.			Ref.
	East	0.694	0.50–0.97	0.033	1.239	0.91–1.69	0.179
	West	0.769	0.57–1.05	0.093	0.717	0.53–0.96	0.027
Location
	Proximal third	Ref.			Ref.
	Mid third	0.973	0.68–1.39	0.881	0.985	0.67–1.45	0.938
	Distal third	0.958	0.74–1.24	0.740	0.786	0.59–1.05	0.108
	Lesser curvature	0.794	0.57–1.11	0.173	0.622	0.42–0.92	0.019
	Greater curvature	0.963	0.65–1.42	0.848	0.725	0.45–1.17	0.189
	Overlapping lesion	1.131	0.82–1.57	0.458	1.204	0.85–1.71	0.302
Size
	≤5 cm	Ref.			Ref.
	>5 cm	1.298	1.07–1.57	0.007	1.497	1.20–1.87	0
NLNE
	<15	Ref.			Ref.
	≥15	0.704	0.58–0.85	0	0.774	0.62–0.96	0.022
Stage
	II	Ref.			Ref.
	III	1.721	1.42–2.09	0	1.839	1.47–2.30	0
Chemotherapy
	Chemotherapy−	Ref.			Ref.
	Chemotherapy+	0.802	0.59–1.10	0.170	1.005	0.67–1.50	0.982
Radiation
	Radiation−	Ref.			Ref.
	Radiation+	0.725	0.60–0.88	0.001	0.724	0.58–0.90	0.004

Values are presented as number (%).

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.