Immediate post-microwave ablation computed tomography model may better predict short-term response of stage I non-small cell lung cancer

Table 4 Comparative performance of five predictive models

Performance measures	Models
	Pre-MWA CT radiomics	Pre-MWA CT + clinical variables	Post-MWA CT radiomics	Post-MWA CT + clinical variables
Youden	0.47	0.71	0.71	0.73
Sensitivity	0.60	0.80	1.00	1.00
Specificity	0.87	0.91	0.71	0.73
Accuracy	0.84	0.90	0.74	0.76
NPV	0.95	0.98	1.00	1.00
PPV	0.33	0.50	0.28	0.29
True positive	3	4	5	5
False positive	6	4	13	12
True negative	39	41	32	33
False negative	2	1	0	0
AUC	0.689	0.849	0.849	0.907

MWA: Microwave ablation; CT: Computed tomography; NPV: Negative predictive value; PPV: Positive-predictive value; AUC: Area under the receiver operating characteristic curve.