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. Author manuscript; available in PMC: 2013 Feb 14.
Published in final edited form as: BJU Int. 2010 Oct 18;107(11):1769–1774. doi: 10.1111/j.1464-410X.2010.09761.x

Table 2.

Absolute differences and ratio of biomarker levels between time 1 and time 2 and between time 1 and time 3.

Biomarker Mean Absolute Difference (95% CI) Mean Ratio (95% CI)
Time 1–Time 2 Time 1–Time 3 Time 1/Time 2 Time 1/Time 3
 tPSA (ng/mL) −0.02 (−0.12, 0.09) −0.03 (−0.34, 0.28) 1.00 (0.98, 1.01) 0.98 (0.95, 1.02)
 fPSA (ng/mL) 0.05 (0.01, 0.10) 0.03 (−0.06, 0.12) 1.03 (1.00, 1.06) 1.01 (0.97, 1.06)
 Percent fPSA (%) 0.60 (0.18, 1.02) 0.56 (−0.08, 1.19) 1.03 (1.01, 1.06) 1.04 (1.00, 1.08)
 hK2 (pg/mL) −1.70 (−6.71, 3.31) 0.26 (−8.07, 8.60) 0.98 (0.94, 1.02) 1.02 (0.96, 1.08)
 iPSA (ng/mL) 0.01 (−0.01, 0.04) 0.02 (−0.02, 0.06) 1.02 (0.98, 1.05) 1.02 (0.98, 1.07)