Table IV.

Univariate and multivariate Cox regression analyses to predict PSA recurrence following surgery.

	P-value (HR, 95% CI)a
Variable	Univariate	Multivariate
Age	n.s.	–
Preoperative PSA	0.0029 (1.03, 1.00–1.060)	n.s.
Clinical T stage	0.001 (1.68, 1.23–2.29)	0.009 (1.60, 1.12–2.29)
Biopsy Gleason score	0.002 (1.44, 1.14–1.81)	0.005 (1.38, 1.10–1.75)
PSA doubling time	0.005 (2.82, 1.37–5.79)	0.008 (2.76, 1.30–5.85)
(>24 months, stable, 0.1–24 months)

^aHR, hazard ratio; CI, confidence interval.