Table 6 Results of the internal cross-validation

	Original sample	One thousand bootstrapped samples
	Value	2.5 Percentile	Median	97.5 Percentile
Optimal proteasome cut-off	2900	1851	2891	3029
Per cent of matched values for proteasome alone	81.93	77.11	83.95	90.36
Optimal α-fetoprotein cut-off	4.65	2.45	6	18.3
Per cent of matched values for α-fetoprotein alone	68.67	64.63	72.29	79.54
Per cent of matched values for combination	75.9	69.51	81.93	95.18
Sensitivity for combination	92	82.05	96	100
Specificity for combination	51.52	13.78	60	100