|
Parameter
|
Number of SFs (%)
|
Number of NSFs (%)
|
P-value*
|
|---|
|
Diagnosis
| | |
0.7879
|
|
Clear cell RCC
|
27 (90.0)
|
28 (93.3)
| |
|
Papillary RCC
|
1 (3.3)
|
1 (3.3)
| |
|
Chromophobe RCC
|
1 (3.3)
|
0 (0)
| |
|
Collecting duct carcinoma
|
1 (3.3)
|
1 (3.3)
| |
|
Grade
| | |
0.3529
|
|
1
|
8 (26.7)
|
9 (30.0)
| |
|
2
|
20 (66.7)
|
21 (70.0)
| |
|
3
|
2 (6.7)
|
0 (0)
| |
|
INF
| | |
0.5194
|
|
a
|
18 (64.3)
|
20 (69.0)
| |
|
b
|
10 (35.7)
|
8 (27.6)
| |
|
c
|
0
|
1 (3.4)
| |
|
pT
| | |
0.7249
|
|
1a
|
12 (40.0)
|
13 (43.3)
| |
|
1b
|
9 (30.0)
|
11 (36.7)
| |
|
2
|
2 (6.7)
|
1 (3.3)
| |
|
3a
|
2 (6.7)
|
3 (10.0)
| |
|
3b
|
5 (16.7)
|
2 (6.7)
| |
|
Side
| | |
0.0705
|
|
Right
|
12 (40.0)
|
19 (63.3)
| |
|
Left
|
18 (60.0)
|
11 (36.7)
| |
- SFs stone formers, NSFs non-stone formers, RCC renal cell carcinoma
- *P < 0.05 indicates statistically significant differences by the chi-square test
