Table 3

Three-way toxicity test results
Man Toxic effects found in man 53
Toxic effects found in man only 23
Rat Toxic effects also found in man 18
Toxic effects not found in man 19
Dog Toxic effects also found in man 29
Toxic effects not found in man 24
Rat

19 false positives

35 false negatives

Sn = 18/(18 + 35) = 34%

PPV = 18/(18 + 19) = 49%

Dog

24 false positives

24 false negatives

Sn = 29/(29 + 24) = 55%

PPV = 29/(29 + 24) = 55%.

Greek et al.

Greek et al. BMC Medical Ethics 2012 13:16   doi:10.1186/1472-6939-13-16

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