Age in year

Dimensions PV (mm)

<20 ans

n = 134

>20 ans

n = 866

P

Average transverse diameter of the PV in its origin

8.8 ± 2

9.6 ± 2

0.298

Average transverse diameter of the PV in its ending

9.1 ± 1.5

9.3 ± 2

0.567

Length averages of the PV

48.8 ± 17.6

46.31 ± 17.3

0.033