Table 3. Variance and covariance analysis for warm ischemic time and 3D score’s elements.

	Model 1	Model 2a	Model 3b
	Mean ± SE	Mean ± SE	Mean ± SE
Tumor volume
1	27.51 ± 0.69	27.51 ± 0.56	27.48 ± 0.57
2	29.36 ± 0.58	29.38 ± 0.59	29.42 ± 0.60
3	30.53 ± 0.20	30.51 ± 0.77	30.48 ± 0.77
P	0.004	0.005	0.005
Endo/exophytic rate
1	27.67 ± 0.63	27.67 ± 0.65	27.66 ± 0.66
2	29.05 ± 0.49	29.06 ± 0.48	29.07 ± 0.48
3	31.43 ± 0.93	31.36 ± 1.13	31.32 ± 1.14
P	0.014	0.017	0.018
Vascular variation
1	28.32 ± 0.40	28.33 ± 0.41	28.31 ± 0.42
2	30.77 ± 0.83	30.75 ± 0.77	30.80 ± 0.79
P	0.006	0.006	0.007
LDTE
1	27.66 ± 0.38	27.64 ± 0.66	27.58 ± 0.67
2	28.52 ± 0.53	28.51 ± 0.59	28.43 ± 0.60
3	30.39 ± 0.86	30.41 ± 0.63	30.56 ± 0.65
P	0.010	0.009	0.006
UCS/sinus involvement
1	28.23 ± 0.44	28.24 ± 0.44	28.25 ± 0.44
2	29.72 ± 0.52	29.67 ± 0.85	29.64 ± 0.86
3	30.94 ± 1.38	30.97 ± 1.00	30.96 ± 1.01
P	0.026	0.028	0.032

Notes.

^aAdjusted for age and gender.

^bAdjusted for age, gender, lateral location and locational face.

Abbreviations

LDTE

longitudinal distance from tumor to equatorial plane

UCS

urinary collecting system

3D

three-dimension