Table 5.

Optimum Thresholds For Cells of Different Ploidies, Obtained from the Crossing Points of Plots of Sensitivity and Specificity throughout the Range of Threshold Values Tested

Ploidy	Gain threshold (sensitivity/specificity) (error probability)	Loss threshold (sensitivity/specificity) (error probability)
Diploid	1.14	0.83
	(0.91)	(0.97)
	(0.18)	(0.060)
Triploid	1.13	0.86
	(0.85)	(0.92)
	(0.30)	(0.16)
Hypertriploid	1.04	0.92
	(0.71)	(0.74)
	(0.58)	(0.52)

The table also lists sensitivity, specificity, and error probability values at each optimum threshold. By definition, the sensitivity and specificity values are the same at each crossing point.