Table 2.

Cox proportional hazards model output showing the relationship between 4-year survival and concordance for Stage II.

		95% CI
Regression variables	Hazard ratio	Lower	Upper	P-Value
Concordance (% similar)	0.95	0.95	0.96	0.00
Age (reference = ≤ 55 years)
56–64 years	2.75	1.44	5.25	0.00
65–74 years	4.45	2.44	8.12	0.00
75 years or greater	11.51	6.41	20.68	0.00
Sex (reference = male)
Female	0.76	0.66	0.89	0.00
Cancer substage (reference = stage A)
Stage B	1.48	1.20	1.83	0.00
Stage C	1.31	0.98	1.76	0.07
Tumour grade (reference = low grade)
High grade	1.33	1.08	1.64	0.01
Unknown	0.66	0.38	1.16	0.15
Emergency surgery	1.48	1.24	1.76	0.00
Comorbidity score	1.13	1.06	1.19	0.00
Screening (reference = none)
Diagnostic	0.96	0.75	1.23	0.73
Repeated	0.84	0.50	1.41	0.51
Sporadic	0.90	0.75	1.08	0.26
Outpatient visits (reference = none)
1 to 4	1.12	0.91	1.38	0.30
5 or more	1.00	0.82	1.23	0.99
Emergency Department visits (reference = none)
1 or 2	1.26	1.01	1.58	0.04
3 or more	1.37	1.05	1.79	0.02
Chemotherapy visits (reference = none)
1 to 4	1.02	0.61	1.70	0.94
5 to 8	0.79	0.46	1.37	0.41
8 or more	0.68	0.38	1.24	0.21
Inpatient surgery, Length of Stay > 5 days	1.13	0.95	1.34	0.18
Urban residency	0.96	0.77	1.20	0.73
Neighbourhood immigrant tercile (reference = lowest)
Highest	0.74	0.59	0.94	0.01
Middle	0.87	0.72	1.06	0.16
Neighbourhood income quintile (reference = lowest)
Highest	0.70	0.55	0.90	0.01
Medium	0.80	0.63	1.01	0.06
Middle	0.71	0.56	0.89	0.00
Medium to low	0.88	0.71	1.09	0.26