Table 4.

Comparison of Final Monitoring Tests AUCs for Thresholds at One, Two, Three or More Adjacent Frequencies Tested Using ⅙-, ⅓-, or ½-Octave Steps

		OCTAVE STEPS
		One-sixth	One-third	One-half
One Frequency
OCTAVE STEPS	One-sixth	AUC = 0.779
		SE(AUC) = 0.042
			Diff(AUC) = 0.011	Diff(AUC) = 0.006
			SE(Diff) = 0.021	SE(Diff) = 0.026
			p = 0.60	p = 0.82
	One-third		AUC = 0.768
			SE(AUC) = 0.043
				Diff(AUC) = −0.005
				SE(Diff) = 0.021
				p = 0.80
	One-half			AUC = 0.773
				SE(AUC) = 0.042
Two Frequencies
OCTAVE STEPS	One-sixth	AUC = 0.809
		SE(AUC) = 0.039
			Diff(AUC) = 0.044	Diff(AUC) = 0.119
			SE(Diff) = 0.024	SE(Diff) = 0.034
			p = 0.072	p = 0.0004
	One-third		AUC = 0.765
			SE(AUC) = 0.043
				Diff(AUC) = 0.075
				SE(Diff) = 0.031
				p = 0.014
	One-half			AUC = 0.690
				SE(AUC) = 0.048
Three Frequencies
OCTAVE STEPS	One-sixth	AUC = 0.782
		SE(AUC) = 0.042
			Diff(AUC) = 0.031	Diff(AUC) = 0.119
			SE(Diff) = 0.036	SE(Diff) = 0.037
			p = 0.38	p = 0.001
	One-third		AUC = 0.751
			SE(AUC) = 0.044
				Diff(AUC) = 0.089
				SE(Diff) = 0.030
				p = 0.0034
	One-half			AUC = 0.662
				SE(AUC) = 0.050

Note: SE(AUC) = standard error of the AUC; Diff(AUC) = difference between AUCs; SE(Diff) = standard error of the Diff(AUC).