Table 1.

Concordance Table Between Chemical Categorization According to the Hits Relative to the Cytotoxic Burst Lower Bound (CTBlb) and Verhaar Toxicity Classifications Based on In Vivo Effects in Aquatic Species

		Verhaar Toxicity Classification
		Specific Acting	Nonspecific Acting
Chemical group	Group A: hits< CTBlb in at least one noncytotoxicity assay	True positive (TP)	False positive (FP)
	Group B: no hits < CTBlb or hits < CTBlb only in cytotoxicity assays	False negative (FN)	True negative (TN)