The development and validation of oral cancer staging using administrative health data

BMC Cancer

Table 4 Staging accuracy according to logistic regression models evaluating the variables of treatment, site, and age

	Model 1	Model 2	Model 3	Model 4	Model 5	Model 6
Variables	Treatment		Treatment	Treatment	Treatment	Treatment
In		Site	Site	Site	Site	Site
Models					Age	Age
				Treatment*site	Treatment*site	Treatment*site
						Treatmentsiteage
Outcome (subgroups)	C-statistic
Stage I versus II-IV
Male	0.76	0.62	0.79	0.81	0.82	0.84
Female	0.83	0.77	0.91	0.94	0.96	0.97
Stage I-II versus III-IV
Male	0.76	0.60	0.78	0.79	0.80	0.82
Female	0.85	0.82	0.96	0.97	0.99	0.99
Stage I-III versus IV
Male	0.76	0.64	0.79	0.80	0.81	0.82
Female	0.85	0.78	0.93	0.94	0.96	0.96

ISSN: 1471-2407