Table 5.

Multiple linear regression analyses showing the association of GFR, plasma osmolality and the urine-to-plasma ratio of urea with total kidney volume (dependent variable) in 122 Patients with ADPKD

ADPKDModel 1Model 2Model 3
St. βP ValueSt. βP ValueSt. βP Value
GFR−0.49<0.001−0.45<0.001
 Age (yr)0.020.82
 Men−0.29<0.001
Plasma osmolality0.44<0.0010.34<0.0010.22<0.01
 Age (yr)0.220.010.050.54
 Men−0.280.001−0.270.001
 GFR−0.41<0.001
U/P urea−0.51<0.001−0.46<0.001−0.290.05
 Age (yr)0.030.76−0.0010.99
 Men−0.260.002−0.260.001
 GFR−0.220.14