ALB and chronic kidney disease: In multivariate logistic analysis with gradual eGFR decline as a reference, proteinuria was associated with progressive eGFR decline in CKD from G2 to G4 + 5; lower albumin in G2, G3a, and G4 + 5; and lower hemoglobin in G3a to G4 + 5.<h4>Conclusions</h4>In patients with CKD adequately treated by primary care physicians, kidney function declined very slowly over 10 years.