Table 2.

Survival predictors in Cox PH model

Variables	β	HR	95%CI	P
Age at diagnosis	0.02	1.02	1.01–1.03	< 0.005**
Race	0.06	1.07	1.04–1.09	< 0.005**
Sex	−0.07	0.93	0.90–0.97	< 0.005**
Marital status	−0.26	0.77	0.75–0.80	< 0.005**
Histologic	−0.04	0.96	0.94–0.99	0.02*
Grade	−0.09	0.91	0.90–0.92	< 0.005**
AJCC stage	−0.02	0.98	0.96–1.00	0.05*
T stage	0.06	1.06	1.05–1.07	< 0.005**
N stage	0.20	1.22	1.20–1.24	< 0.005**
M stage	0.60	1.83	1.70–1.96	< 0.005**
Summary_stage	0.06	1.06	1.02–1.09	< 0.005**
Surg Prim Sitea	0.00	1.00	1.00–1.00	0.01*
Surgery	−0.83	0.43	0.41–0.46	< 0.005**
Chemotherapy	−0.21	0.81	0.77–0.84	< 0.005**
CS tumor size (2004+)b	0.00	1.00	1.00–1.00	< 0.005**
CS extension (2004+)c	0.00	1.00	1.00–1.00	< 0.005**
CS_lymph_nodes (2004+)d	0.00	1.00	1.00–1.00	0.04*
CS mets at dx (2004+)e	0.01	1.01	1.01–1.02	< 0.005**

Cox PH Cox proportional hazard regression; HR Hazard Ratio; CI Confidence Interval

^aSurg Prim Site:Surgery of Primary Site describes a surgical procedure that removes and/or destroys tissue of the primary site performed as part of the initial work-up or first course of therapy

^bCS tumor size (2004+): Information on tumor size. Available for after 2004 year. Earlier cases may be converted and new codes added which weren’t available for use prior to the current version of CS

^cCS extension (2004+):Information on extension of the tumor. Available for after 2004 year. Earlier cases may be converted and new codes added which weren’t available for use prior to the current version of CS

^dCS_lymph_nodes (2004+): Information on involvement of lymph nodes. Available for after 2004 year. Earlier cases may be converted and new codes added which weren’t available for use prior to the current version of CS

^eCS mets at dx (2004+): Information on distant metastasis. Available for after 2004 year. Earlier cases may be converted and new codes added which weren’t available for use prior to the current version of CS

* P < 0.05, ** P < 0.01, *** P < 0.001