Table 3.

Categorical variables according to group differences

Variable	Categories	Group A, n (%)	Group B, n (%)	P-value
Primary treatment	Radical prostatectomy	5 (35.7)	8 (28.5)	0.25
	Radiotherapy	5 (35.7)	9 (32.1)
	Both	4 (28.5)	11 (39.2)
Sites of recurrence	Bone	8 (57.1)	7 (25)	0.04
	Non-bone	6 (42.8)	21 (75)
Gleason score	<8	6 (42.8)	20 (71.4)	0.07
	≥8	8 (57.1)	8 (28.5)

Notes: Group A: CTC-positive patients. Group B: CTC-negative patients. Statistically significant value is shown in bold.

Abbreviation: CTC, circulating tumor cell.