Table 1 Demographic data and characteristics of patients who received RLRN or TLRN

Age, yr, mean (SD)

57.4(10.1)

57.0(11.0)

0.822^b

Male, n (%)

36(60)

39(65)

0.572^a

BMI, kg/m², median (IQR)

24.2(21.5 ~ 26.4)

23.7(21.3 ~ 26.5)

0.815^c

ASA grade, n (%)

0.658^a

 ASA 1

2(3.3)

4(6.7)

 ASA 2

51(85)

48(80)

 ASA 3

7(11.7)

8(13.3)

Any classic symptoms, n (%)

27(45)

28(46.7)

0.855^a

Comorbidity, n (%)

27(45)

30(50)

0.583^a

Posterior side, n (%)

23(38.3)

20(33.3)

0.568^a

Left side, n (%)

30(50)

27(45)

0.583^a

Location, n (%)

0.071^a

 Upper pole

8(13.3)

18(30)

 Upper-middle pole

12(20)

6(10)

 Mid pole

10(16.7)

14(23.3)

 Lower-middle pole

12(20)

6(10)

 Lower pole

18(30)

16(26.7)

Clinical stage, n (%)

0.619^a

 cT1a

10(16.7)

6(10)

 cT1b

28(46.7)

31(51.7)

 cT2a

14(23.3)

12(20)

 cT2b

8(13.3)

11(18.3)

Tumor size, cm, median (IQR)

6.1(5 ~ 7.6)

6.3(5 ~ 8.8)

0.472^c