Table 3 Changes in IPSS, IIEF-5, and Qmax with age and PSA level

Spearman's rho

diff_QMAX

 Correlation coefficient

1.000

− 0.341**

− 0.125

0.040

0.074

 p value

–

0.006

0.364

0.755

0.562

 N

63

63

55

63

63

diff_IPSS

 Correlation coefficient

− 0.341**

1.000

− 0.338*

− 0.046

0.114

 p value

0.006

–

0.012

0.720

0.374

 N

63

63

55

63

63

diff_IIEF

 Correlation coefficient

− 0.125

− 0.338*

1.000

0.088

− 0.142

 p value

0.364

0.012

–

0.525

0.300

 N

55

55

55

55

55

Age

 Correlation coefficient

0.040

− 0.046

0.088

1.000

0.380**

 p value

0.755

0.720

0.525

–

0.001

 N

63

63

55

70

70

PSA

 Correlation coefficient

0.074

0.114

− 0.142

0.380**

1.000

 p value

0.562

0.374

0.300

0.001

–

 N

63

63

55

70

70