Summary of all studies about Retzius-sparing robot-assisted radical prostatectomy.

Table 1: Summary of all studies about Retzius-sparing robot-assisted radical prostatectomy.

First author & year	Study design	Participants	RS-RARP	C-RARP	Mean age (years)	Risk of bias
Chang 2018 [21]	Case-control	60	30	30	66.2	Unclear
Dalela 2017 [18]	RCT	120	60	60	61.2	Low
Eden 2017 [20]	Retrospective	80	40	40	64	Unclear
Ghanem 2017 [9]	Prospective	102	51	51	61.9	Unclear
Kiat Lim 2014 [12]	Retrospective	100	50	50	65.9	Unclear
Menon 2017 [11]	RCT					Low
Sayyid 2017 [22]	Prospective	200	100	100	61.5	Unclear
Tobias Machado 2017 [26]	Prospective	60	30	30	63.9	Unclear

RCT = Randomised Controlled Trial; RS-RARP = Retzius-Sparing; C-RARP = Conventional Approach.