Table 6.

5 × 2 cross validation with longevity error in years for the period of 1993–1997.

	Step 1	Step 2	Step 3	Step 4	Step 5
Initial CBR	0.67	0.72	0.82	0.63	0.73
Proposal	0.41	0.54	0.38	0.38	0.45
MLP	0.85	0.95	0.80	1.06	0.79
RBF	1.01	0.84	0.87	1.10	0.81