TABLE I.

Distribution of Serum fPSA, tPSA, cPSA, and Percent fPSA Values at the Three Rounds of Screening

		Median (25th–75th centiles)
Group	Year of screening	fPSA (ng/ml)	tPSA (ng/ml)	cPSA (ng/ml)	%fPSA
A	1995–1996	0.15 (0.12–0.20)	0.45 (0.35–0.59)	0.28 (0.20–0.40)	34.5 (26.2–43,4)
	1997–1998	0.15 (0.11–0.19)	0.48 (0.35–0.62)	0.31 (0.22–0.43)	31.2 (24.0–39.7)
	2001–2002	0.15 (0.11–0.19)	0.43 (0.34–0.53)	0.27 (0.20–0.35)	35.8 (27.8–43.0)
B	1995–1996	0.19 (0.14–0.25)	0.58 (0.42–0.79)	0.38 (0.25–0.55)	32.9 (25.0–42.0)
	1997–1998	0.18 (0.13–0.25)	0.62 (0.45–0.79)	0.41 (0.28–0.56)	31.3 (24.3–38.7)
	2001–2002	0.19 (0.14–0.16)	0.61 (0.43–0.78)	0.39 (0.27–0.52)	33.3 (26.1–41.1)
C	1995–1996	0.29 (0.23–0.37)	1.05 (0.84–1.35)	0.75 (0.56–1.02)	27.5 (21.5–34.6)
	1997–1998	0.30 (0.23–0.40)	1.15 (0.93–1.46)	0.84 (0.63–1.10)	26.2 (20.6–33.1)
	2001–2002	0.36 (0.28–0.46)	1.36 (1.15–1.63)	0.98 (0.83–1.21)	26.5 (20.7–32.7)

Group A represents men with tPSA ≤ 0.61 ng/ml, group B men with tPSA ≤ 0.99 ng/ml, and group C men with tPSA 1.00–1.99 ng/ml, in 2001–2002.

Calculated parameters are shown in italics.