Table 1. Characteristics of patients (n=25).

Characteristic	Value
Age (yr)	69 (54~78)
PSA (ng/dL)	0.02 (0.01~0.05)
UFR (mL/s)	21 (10~40)
Duration of visit (mo)	40 (6~120)
Type of operation
Robot-assisted RP	11
Erectile dysfunction	20
By penile duplex ultrasonogram	PSV<30
Incontinence	18
By self-reporting ICIQ-SF score	14.6 (9~21)

Values are presented as median (range) or number only. PSA: prostate specific antigen, UFR: urinary flow rate, RP: radical prostatectomy, PSV: peak systolic velocity, ICIQ-SF: International Consultation on Incontinence Questionnaire-Short Form.