Table 1.

Training and test set composition. ^a The OOI Malignant set includes subjects out of indication due only to having a positive lung cancer diagnosis from bronchoscopy. ^b The OOI Other set includes subjects that are out of indication due to other reasons (never smokers, concurrent or prior cancer or metastatic to lung)

	Set	Cohort	Pre-Test Risk Group				N
			Low	Intermediate	High	Missing
Training (N = 1502)	Primary (Within Indication)	AEGIS	25	50	78	36	189
		Registry	7	80	35	.	122
		Total					311
	OOI Malignanta	AEGIS	1	24	477	77	579
		Total					579
	OOI Otherb	AEGIS	48	122	217	82	469
		Registry	22	85	33	3	143
		Total					612
Test (N = 412)	Primary (Within Indication)	AEGIS	58	82	106	.	246
		Registry	22	106	38	.	166
		Total					412