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. 2015 Mar-Apr;41(2):258–264. doi: 10.1590/S1677-5538.IBJU.2015.02.11

Table 3. Simple linear regression analyses of prostate-specific antigen fluctuation and clinical parameters.

Variables Coefficient B SE P value
Age (year) -0.059 0.170 0.728
PSA1 (ng/mL) 3.404 0.392 <0.001
PSA2 (ng/mL) -3.978 0.625 <0.001
%Free-PSA (%) 0.163 0.165 0.325
PSAD (ng/mL/g) -20.061 16.029 0.212
Prostate volume (g) -0.029 0.075 0.696

PSA = prostate-specific antigen, PSA 1 = baseline PSA, PSA 2 = secondary PSA, %Free-PSA = percentage of free PSA, PSAD = PSA density.