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Table 1

Results of receiver operating characteristic curves comparing device size and pre-closure echocardiographic parameters for their accuracy to predict PAF

Variable	AUC	95% CI	P value	Cut-off	Sensitivity	Specificity
Device size, mm	0.592	0.546–0.781	0.071	27	53	56
2D-LA-Vmax, mL/m²	0.646	0.604–0.782	0.053	33	58	83
2D-LA-Vmin, mL/m²	0.752	0.665–0.811	0.046	13	75	78
2D-LA-EI, %	0.794	0.687–0.842	0.043	107	79	77
LA-PS, %	0.831	0.692–0.884	0.045	25	82	76
LA-TPS, ms	0.861	0.748–0.898	0.024	119	88	85
3D-LA-Vmax, mL/m²	0.785	0.705–0.832	0.047	35	62	85
3D-LA-Vmin, mL/m²	0.834	0.726–0.885	0.031	15	82	80
3D-LA-EI, %	0.854	0.712–0.897	0.023	121	87	84
3D-LA-EI + LA-TPS	0.914	0.811–0.939	0.011	121 119	91	86

Variable	AUC	95% CI	P value	Cut-off	Sensitivity	Specificity
Device size, mm	0.592	0.546–0.781	0.071	27	53	56
2D-LA-Vmax, mL/m²	0.646	0.604–0.782	0.053	33	58	83
2D-LA-Vmin, mL/m²	0.752	0.665–0.811	0.046	13	75	78
2D-LA-EI, %	0.794	0.687–0.842	0.043	107	79	77
LA-PS, %	0.831	0.692–0.884	0.045	25	82	76
LA-TPS, ms	0.861	0.748–0.898	0.024	119	88	85
3D-LA-Vmax, mL/m²	0.785	0.705–0.832	0.047	35	62	85
3D-LA-Vmin, mL/m²	0.834	0.726–0.885	0.031	15	82	80
3D-LA-EI, %	0.854	0.712–0.897	0.023	121	87	84
3D-LA-EI + LA-TPS	0.914	0.811–0.939	0.011	121 119	91	86

Adapted from Vitarelli et al.²

3D, three-dimensional; 2D, two-dimensional; AUC, area under the curve; CI, confidence interval; EI, expansion index; LA, left atrium; PAF, paroxysmal atrial fibrillation; PS, peak strain (reservoir phase); TPS, time-to-peak strain; Vmax, maximal volume index; Vmin, minimal volume index.

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