EURURO Vol. 72 No. 5

per-protocol comparison. The proportion of patients with

0 g leak at 1 wk was 45% in the posterior approach versus

20% in the anterior arm (

= 0.005;

Table 3

and

Fig. 2

3.3.

Secondary outcomes: time to continence recovery and

trends in urinary function

At 1, 2, and 3 mo after surgery, 83%, 88%, and 95% of men

undergoing the posterior approach were continent (0 pads/

one security pad per day), compared with 67%, 72%, and 86%

undergoing the anterior approach, respectively (log-rank

= 0.02). The median (95% confidence interval [CI]) time to

urinary continence recovery was 2 (1.2–2.8) d for the

posterior versus 8 (2.3–13.7) d for the anterior group

( Fig. 3 )

The proportion of patients with 0 g leak was 66% in the

posterior versus 35% in the anterior arm 1 mo after catheter

removal, which increased to 93% and 70%, respectively, at

3 mo

( Fig. 2

). Cox regression analyses showed that the

approach (posterior vs anterior) was significantly associated

with urinary continence recovery (0–1 pad/d odds ratio [OR]

[(Fig._2)TD$FIG]

Fig. 2 – The 24-h pad weights at 1

[6_TD$DIFF]

week

[7_TD$DIFF]

(wk

[8_TD$DIFF]

), 2 wk, 1

[9_TD$DIFF]

month

[10_TD$DIFF]

(mo

[11_TD$DIFF]

), and 3 mo following catheter removal in patients undergoing anterior

[1_TD$DIFF]

or posterior

RARP

[2_TD$DIFF]

. Numbers along

-axis represent proportion (%) of patients in each category (no leak [0 g/d], minimal leak [1–30 g/d], mild–moderate leak [31–

300 g/d], or severe leak [>300 g/d]). The

values shown in the figures are derived from the omnibus chi-square test; groups with asterisk indicate a

statistically significant difference (

< 0.0125) after Bonferroni correction. RARP = robot-assisted radical prostatectomy.

[(Fig._3)TD$FIG]

Fig. 3 – Kaplan–Meier curves showing the recovery of urinary continence (defined as (A) 0 pads/one security pad per day and (B) 0 pads per day) in

patients undergoing anterior and posterior robot-assisted radical prostatectomy (RARP). CI = confidence interval; UC = urinary continence.

E U R O P E A N U R O L O G Y 7 2 ( 2 0 1 7 ) 6 7 7 – 6 8 5

681