Table 4. Multivariable survival analyses: model selection according to p-values and Bayes Information Criterion.

Step	Number of Predictors in Model	Breslow's Thickness	DCCD	Ulceration	Age	Nodal Statusa	Localization	Gender	BIC
1	7	<0.0001	0.0068	0.0009	0.0051	0.0371	0.1380	0.8052	1,657.8
2	6	<0.0001	0.0069	0.0008	0.0050	0.0340	0.1035	—	1,650.9
3	5	<0.0001	0.0011	0.0008	0.0054	0.0475	—	—	1,646.6
4	4	<0.0001	<0.0001	0.0005	0.0127	—	—	—	1,643.6
5	3	<0.0001	<0.0001	0.0002	—	—	—	—	1,642.9
6	2	<0.0001	<0.0001	—	—	—	—	—	1,649.8
7	1	<0.0001	—	—	—	—	—	—	1,679.1

p-Values are for testing whether a hazard ratio equals 1; low BIC identifies best model.

^aAs determined by routine histopathology.