DARTNet Institute Informing Practice Improving Care
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Research > Chronic Kidney Disease Natural History
Datasets > Chronic Kidney Disease Natural History

Chronic Kidney Disease Natural History Study

The purpose of this study was to look at the rate of progression of CKD and factors that will modify that such as blood pressure control, blood sugar control, use of ACE inhibitors, and use of nonsteroidal anti-inflammatory drugs. The longitudinal dataset will also help us determine the positive predictive value of a single eGFR or a single urine albumin creatinine ratio (UACR). We querried a subset of a 1 million-person practice performance dataset that had clinical data from over 20 different EMRs from across the country. The query identified patients who had an initial positive CKD screening test defined by having a single estimated glomerular filtration rate (eGFR) <60.


The CKD natural history study was funded by a grant from the National Kidney Foundation. 

Dataset Description

Study Name Description Type of Patients Included N Data Elements
CKD - Natural History An electronic chart audit through DARTNet to examine the natural history of chronic kidney disease (CKD). Any person with an eGFR below 60 69817
  • ALT
  • Gender
  • Current Smoker
  • Height and Weight/BMI
  • Total physician visits
  • Hemoglobin
  • HDL
  • LDL-C
  • Triglycerides
  • Age
  • AST
  • Urine albumin/creatinine ratio
  • HbA1c
  • 25 OH Vitamin D
  • Serum Phosphorous
  • PTH intact
  • All meds
  • All diagnosis Active
  • All diagnosis inactive
  • Blood pressure
  • Estimated GFR
  • Creatinine