Appendix 2.

Regression results for urinary function and continence ^*

Model	1	2
Dependent variable	Mean UCLA-PCI-UFS **	Continence §
Follow-up period
3 mo	Ref.	Ref.
6 mo	8.62 †	2.78 †
12 mo	12.88 †	5.30 †
2 yr	15.56 †	8.52 †
8 yr	13.53 †	5.40 †
10 yr	11.40 †	4.06 †
Observations, no.	6603	6004
Patients, no.	1626	1596
Log likelihood	–2227.26
r2, within observations	–	0.22
r2, between observations	–	0.08
r2, overall	–	0.10

UCLA-PCI-UFS = University of California, Los Angeles-Prostate Cancer Index-urinary function score; Ref = reference.

^*Adjusted for age at time of radical prostatectomy, preoperative urinary function, preoperative PSA, Gleason score, stage, type of nerve-sparing surgery, race/ethnicity, and marital status. Similar results were obtained when using a dummy variable for age ≥60 yr and the interaction of follow-up period with age ≥60 yr.

^**Regression coefficient.

^§Odds ratio.

^†p < 0.001