1. Volume 71, Issue 1, Pages 31-38 (January 2007)
Prevalence of abnormal serum vitamin D, PTH, calcium, and phosphorus in patients with chronic kidney disease: Results of the study to evaluate early kidney disease 
A. Levin, G.L. Bakris, M. Molitch, M. Smulders, J. Tian, L.A. Williams, D.L. Andress 
Kidney International 
Volume 71, Issue 1, Pages (January 2007)
DOI: /sj.ki
Copyright © 2007 International Society of Nephrology Terms and Conditions

2. Figure 1 Screening, inclusion, and analytical sample flow.
Kidney International  , 31-38DOI: ( /sj.ki )
Copyright © 2007 International Society of Nephrology Terms and Conditions

3. Figure 2
Distribution of patients by eGFR intervals. The majority of patients in the cohort had stage 3 CKD, with an eGFR between 30 and 60ml/min/1.73m2. Twenty-two percent had an eGFR >60ml/min/1.73m2.
Kidney International  , 31-38DOI: ( /sj.ki )
Copyright © 2007 International Society of Nephrology Terms and Conditions

4. Figure 3
Median values of serum Ca, P, and iPTH by eGFR levels. Increases in iPTH preceded changes in serum Ca and P.
Kidney International  , 31-38DOI: ( /sj.ki )
Copyright © 2007 International Society of Nephrology Terms and Conditions

5. Figure 4
The prevalence of HPTH, hypocalcemia, and hyperphosphatemia by eGFR levels at 10ml/min intervals.
Kidney International  , 31-38DOI: ( /sj.ki )
Copyright © 2007 International Society of Nephrology Terms and Conditions

6. Figure 5
Median values of 1,25 OH2 D3, 25(OH)D3 and iPTH by GFR levels.
Kidney International  , 31-38DOI: ( /sj.ki )
Copyright © 2007 International Society of Nephrology Terms and Conditions

7. Figure 6
The prevalence of deficiency of 1,25 OH2 D3, 25(OH)D3, and HPTH by GFR intervals.
Kidney International  , 31-38DOI: ( /sj.ki )
Copyright © 2007 International Society of Nephrology Terms and Conditions

8. Figure 7
Association between low 1,25 OH2 D3, low 25(OH)D3, and high iPTH levels.
Kidney International  , 31-38DOI: ( /sj.ki )
Copyright © 2007 International Society of Nephrology Terms and Conditions