Table 3.

Predictive performance in validation tests with recent experimental data^a

Classification schemeb	CM or No CM	NB or No NB	CD or No CD	CMCD or No CMCD
Accuracy (%)	58	40	51	69
Default class	CM	No NB	No CD	CMCD
Majority class	CM	No NB	No CD	CMCD
Sensitivity (%)	78	72	75	91
Specificity (%)	66	16	49	71
Minority class	No CM	NB	CD	No CMCD
Sensitivity (%)	16	35	30	22
Specificity (%)	27	88	58	57

Data on 147 compounds entered in the UMBBD between 17 November 2003 and 27 November 2006 along with the set of biochemical reactions involved in their biodegradation.

CM, NB, CD, CMCD, accuracy, sensitivity, specificity: as in footnote to Table II.