Table 2.

Separate multivariable logistic regression models for PADUA and RENAL predicting trifecta status (trifecta achieved vs. trifecta not achieved) in patients diagnosed with small renal masses between 2008 and 2021 and treated with ablation. Bootstrapped c-index represents the discrimination ability of the score generated by the models.

PADUA Derived Score c-Index: 0.60 (0.53–0.67)				RENAL Derived Score c-Index: 0.62 (0.55–0.69)
Model Items	Odds Ratio	95% CI	p-Value	Model Items	Odds Ratio	95% CI	p-Value
Polar location				Polar location
Upper/Lower	Ref			Entirely above or below the polar lines	Ref
				Crosses a polar line	1.0	(0.5–1.8)	0.9
Middle	0.8	(0.5–1.4)	0.5	>50% crosses a polar line or crosses the axial renal midline or entirely between the polar lines	0.6	(0.3–1.4)	0.3
Exophytic rate				Exophytic rate
<50%	Ref			<50%	Ref
≥50%	1.1	(0.6–2.1)	0.7	≥50%	1.2	(0.6–2.3)	0.5
Endophytic	0.9	(0.4–1.9)	0.8	Endophytic	0.7	(0.3–1.6)	0.4
Size (diameter)				Size (diameter)
≤4 cm	Ref			≤4 cm	Ref
>4 cm	3.4	(1.7–6.8)	<0.001	>4 cm	3.7	(1.8–7.5)	<0.001
Renal sinus				Nearness to renal sinus or collecting system
Not involved	Ref			≥7 mm	Ref
				4–7 mm	1.3	(0.6–2.5)	0.5
Involved	1.0	(0.5–2.1)	0.9	≤4 mm	6.1	(3.0–12.5)	<0.001
Urinary collecting system
Not involved	Ref
Dislocated/infiltrated	2.3	(1.2–4.5)	0.01
Renal rim
Lateral	Ref
Medial	1.3	(0.8–2.2)	0.3

Bold values indicate statistical significance p < 0.05. CI: confidence interval.