Table 3.

Analysis of Thresholds

True Positive Fractions	Non-SOS Condition	SOS Condition	F(1,18)	P	Significance Level
Most Conservative Threshold	0.225	0.186	5.70	0. 0282	*
Most Lenient Threshold	0.467	0.395	12.18	0. 0026	**
Center of Range	0.346	0.290	15.60	0. 0009	***
Width of Range	0.242	0.209	1.87	0. 1888

False-Positive Fractions Reporting Non-Nodule Abnormality	Non-SOS Condition	SOS Condition	F(1,18)	P	Significance Level
Most Conservative Threshold	0.056	0.033	5.86	0.0263	*
Most Lenient Threshold	0.174	0.116	6.71	0.0185	*
Center of Range	0.115	0.075	9.66	0.0061	**
Width of Range	0.118	0.083	2.45	0.1350

False-Positive Fractions Reporting Any Abnormality	Non-SOS Condition	SOS Condition	F(1,18)	p	Significance Level
Most Conservative Threshold	0.073	0.046	7.81	0.0120	*
Most Lenient Threshold	0.263	0.172	11.38	0.0034	**
Center of Range	0.168	0.109	13.25	0.0019	**
Width of Range	0.190	0.126	6.93	0.0169	*

^*indicates P < 0.05;

^**indicates P < 0.01;

^***indicates P < 0.001.