Table 1.

Demography

Feature	Median ± SD or n (%)	RTS (cm)	PTS (cm)	P value
No. of total subjects	257
Age (years)	56.8 (range 18–86)
Gender
Male	181 (70.4 %)	4.41 ± 1.96	3.84 ± 1.85	<0.0001
Female	76 (29.6 %)	4.93 ± 2.54	4.43 ± 2.72	<0.0001
BMI	24.46 (range 15.63–32.37)
Tumor side
Left	117 (45.5 %)	4.70 ± 2.25	4.16 ± 2.28	<0.0001
Right	140 (54.5 %)	4.46 ± 2.07	3.90 ± 2.04	<0.0001
Surgery type
RN	164 (63.8 %)	5.26 ± 2.12	4.64 ± 2.21	0.01
PN	93 (36.2 %)	3.34 ± 1.60	2.92 ± 1.54	0.067
Histology
Clear cell	208 (80.9 %)	4.57 ± 2.09	3.98 ± 2.06	0.004
Chromophobe	9 (3.5 %)	4.54 ± 2.42	4.16 ± 2.51	0.045
Papillary	11 (4.3 %)
Collecting duct	1 (0.4 %)
Adenocarcinoma	2 (0.8 %)
ccRCC + adenocarcinoma	5 (1.9 %)
Other	21 (8.2 %)
Pathologic T stage
T1a	183 (71.2 %)	3.67 ± 1.25	3.04 ± 0.97	<0.0001
T1b	57 (22.2 %)	5.87 ± 1.31	5.37 ± 0.87	0.001
T2a	11 (4.3 %)
T2b	6 (2.3 %)
RTS (cm)	4.57 ± 2.15			0.004
PTS (cm)	4.02 ± 2.15