Table 1.

Patient characteristics.

	Training set	Test set	p-value
Number of patients	140	30
Age (years, mean ± SD)	73.5 ± 8.8	73.9 ± 10.3	0.84
Sex			0.62
Male	113	23
Female	27	7
Histological grade			0.97
High	112	24
Low	24	6
Others	4	0
Muscle invasion			0.98
MIBC	51	11
NMIBC	89	19

SD standard deviation, MIBC muscle-invasive bladder cancer, NMIBC non-muscle-invasive bladder cancer.