Evaluating PSA Density as a Predictor of Biochemical Failure after Radical Prostatectomy: Results of a Prospective Study after a Median Follow-Up of 36 Months
Table 1
Study cohort characteristics.
Characteristics
Kolmogorov-Smirnov
Number of patients, n
244
Age (years)
Mean ± std, IQR
66.2 ± 6.49, 10
PSA (ng/mL)
Mean ± std, IQR
8.85 ± 3.66, 4.79
PSA density (ng/mL2)
Mean ± std, IQR
0.34 ± 0.38, 0.19
Preoperative Gleason score, n (%)
≤6
87 (35.7)
7
118 (48.4)
≥8
39 (16.0)
Pathological Gleason score, n (%)
≤6
86 (35.2)
7
112 (45.9)
≥8
46 (18.9)
Clinical stage, n (%)
T1c
181 (74.2)
T2a
45 (18.4)
T2b
16 (6.6)
T2c
2 (0.8)
Pathological stage, n (%)
T2a
25 (10.2)
T2b
8 (3.3)
T2c
142 (58.2)
T3a
47 (19.3)
T3b
22 (9.0)
Extracapsular disease, n (%)
No
175 (71.7)
Yes
69 (28.3)
Surgical margins, n (%)
Negative
167 (68.4)
Positive
77 (31.6)
Seminal vesicles invasion, n (%)
No
222 (91.0)
Yes
22 (9.0)
Lymph nodes invasion, n (%)
Not performed
91 (37.3)
No
122 (50.0)
Yes
31 (12.7)
Biochemical failure, n (%)
No
173 (70.9)
Yes
71 (29.1)
Std: standard deviation; IQR: interquartile range.