Table 1.

Baseline characteristics of the population

Variable	N = 560
Sex
Male	394 (70.4%)
Female	166 (29.6%)
Age (years)	55.5 ± 10.9
Size (cm)	4.6 ± 2.2
Side
Right	256 (45.7%)
Left	304 (54.3%)
WHO/ISUP grade
I	139 (24.8%)
II	328 (58.6%)
III	69 (12.3%)
IV	24 (4.3%)
Pathological T stage
T1a	295 (52.7%)
T1b	146 (26.1%)
T2a	52 (9.3%)
T2b	5 (0.9%)
T3a	59 (10.5%)
T3b	2 (0.4%)
T4	1 (0.2%)

Continuous data are expressed as mean ± standard deviation (interquartile range) and categorical data as number (proportion)

BMI Body mass index