Comparison of urinary and sexual patient-reported outcomes between open radical prostatectomy and robot-assisted radical prostatectomy: a propensity score matched, population-based study in Victoria

Table 3 Propensity score matching results for EPIC-26 items

Binary outcomes	Unmatched cohort						Matched cohort
Binary outcomes	ORP	RARP	Difference	P value	95% CI		ORP	RARP	Difference	P value	95% CI
Urinary outcomes
Urinary bother (moderate-big)	9.99%	8.30%	− 1.69%	0.125	− 3.85%	0.47%	7.93%	8.39%	0.47%	0.707	− 1.97%	2.91%
Pad usage (≥1 pad)	33.53%	30.23%	− 3.36%	0.074	− 7.03%	0.32%	31.48%	30.73%	− 0.75%	0.771	− 5.76%	4.27%
Urinary incontinence domain, mean (SD)	76.98 (25.64)	78.25 (24.00)	1.27	0.195	− 3.19	0.65	78.82 (24.31)	77.99 (23.93)	− 0.84	0.506	− 3.30	1.63
Urinary irritative/obstructive domain, mean (SD)	92.48 (11.59)	93.47 (10.56)	1.00	0.022	− 1.85	− 0.14	92.48 (11.35)	93.50 (10.64)	1.03	0.105	− 0.21	2.27
Sexual outcomes
Sexual bother (moderate-big)	39.73%	39.40%	− 0.33%	0.860	− 3.95%	3.30%	39.38%	38.49%	− 0.89%	0.731	− 5.97%	4.19%
Sexual domain, mean (SD)	23.48 (22.24)	30.15 (24.56)	6.67	<0.001	− 8.56	− 4.78	25.92 (24.24)	29.57 (24.35)	3.65	0.005	1.10	6.20

This table compares binary outcome variables (urinary bother, sexual bother and pad usage) and continuous outcome variables (urinary incontinence domain, urinary irritative/obstructive domain and sexual domain) between men who underwent ORP and RARP in both unmatched and matched cohorts. For the binary variables, the unmatched cohort used binary regression, expressed as a risk difference (RARP-ORP), whereas the matched cohort used propensity score matching average treatment effects, expressed as a risk difference (RARP-ORP). For continuous variables, the unmatched cohort used t-tests expressed as a mean difference, which is the difference in mean scores between groups (RARP-ORP), whereas the matched cohort used propensity score matching average treatment effects expressed as a mean difference
Unmatched cohort: Urinary bother population (n = 3634): ORP = 971, RARP = 2663. Pad usage population (n = 3215): ORP = 850, RARP = 2365. Urinary incontinence population (n = 3203): ORP = 845, RARP = 2358. Urinary irritative/obstructive population (n = 3198): ORP = 845, RARP = 2353. Sexual bother population (n = 3596): ORP = 954, RARP = 2642. Sexual domain population (n = 3179): ORP = 838 RARP = 2341
ORP = Open radical prostatectomy; RARP = Robot-assisted radical prostatectomy; Difference = risk difference (binary variables) or mean difference (continuous variables); 95% CI = 95% confidence interval

ISSN: 1471-2490