Table 4.

Multivariable linear regression analyses showing the association of urine-to-plasma concentration ratio of urea with plasma copeptin (dependent variable) in 122 patients with ADPKD.

ADPKDModel 1: All PatientsModel 2: All PatientsModel 3: All Patients
St. βP ValueSt. βP ValueSt. βP Value
U/P urea−0.32<0.001−0.310.001−0.46<0.001
Age (yr)−0.060.53−0.040.63
Men−0.280.001−0.32<0.001
Plasma sodium0.120.14
24-h urine volume−0.42<0.001
MAP0.100.23
Diuretics0.010.89