However , between visits the absolute loss and percent loss of the EZ width per year was significantly greater for xlRP than adRP for both HW ( xlRP : 1.0 0.6 / y , 9.6 5.6 % / y ; adRP : 0.4 0.5 / y , 3.4 5.4 % / y ; P < 0.001 ) and VW ( xlRP : 0.8 0.8 / y , 9.2 8.9 % / y ; adRP : 0.3 0.5 / y , 4.2 6.4 % / y ; P < 0.01 ) .