1. Date of download: 5/28/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Serum Creatinine Is an Inadequate Screening Test for Renal Failure in Elderly Patients Arch Intern Med. 2003;163(3):356-360. doi:10.1001/archinte.163.3.356 Flowchart of the study design and results. C-G GFR indicates glomerular filtration rate estimated by the Cockcroft and Gault formula. Figure Legend:

2. Date of download: 5/28/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Serum Creatinine Is an Inadequate Screening Test for Renal Failure in Elderly Patients Arch Intern Med. 2003;163(3):356-360. doi:10.1001/archinte.163.3.356 Comparison of serum creatinine level in the 55 men and women with severe renal failure (Cockcroft and Gault formula glomerular filtration rate [C-G GFR], ≤30 mL/min). Women had significantly lower mean serum creatinine values than men, despite a similar level of renal function. This is likely because of the smaller muscle mass of women compared with men, as suggested by the women's significantly lower mean weight. The asterisk indicates P<.005. To convert creatinine to milligrams per deciliter, divide by 88.4. Figure Legend:

3. Date of download: 5/28/2016 Copyright © 2016 American Medical Association. All rights reserved. From: Serum Creatinine Is an Inadequate Screening Test for Renal Failure in Elderly Patients Arch Intern Med. 2003;163(3):356-360. doi:10.1001/archinte.163.3.356 Investigation for causes and complications of severe renal failure (Cockcroft and Gault formula glomerular filtration rate, ≤30 mL/min) in the 40 nonreferred patients. Figure Legend: