Evidence map›Paper›PMID 27233381›Full record

Trial reportAmerican journal of kidney diseases : the official journal of the National Kidney Foundation2017

Urine Potassium Excretion, Kidney Failure, and Mortality in CKD.

Amanda K Leonberg-Yoo, Hocine Tighiouart, Andrew S Levey, Gerald J Beck, Mark J Sarnak

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in American journal of kidney diseases : the official journal of the National Kidney Foundation, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 4 pooled it
4.5field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed, 4 syntheses or guidelines pooled it, 80 citations in OpenAlex.

  1. Education programmes for people with chronic kidney disease and diabetes.The Cochrane database of systematic reviews · 2024
    Pooled it
  2. Low protein diets for non-diabetic adults with chronic kidney disease.The Cochrane database of systematic reviews · 2020
    Pooled it
  3. Pooled it
  4. Low protein diets for non-diabetic adults with chronic kidney disease.The Cochrane database of systematic reviews · 2018
    Pooled it
  5. Trial
  6. Potassium and the kidney.Nature reviews. Nephrology · 2026
    Review
  7. Review
  8. ASN Kidney Health Guidance on Potassium and Phosphorus Food Additives.Journal of the American Society of Nephrology : JASN · 2025
    Article
  9. Estimated potassium intake and the progression of chronic kidney disease.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2025
    Article
  10. Risk-directed management of chronic kidney disease.Nature reviews. Nephrology · 2025
    Review
  11. Article
  12. Review
  13. Chronic kidney disease increases the susceptibility to negative effects of low and high potassium intake.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2024
    Article
  14. Review
  15. Urinary Na/K ratio is a predictor of developing chronic kidney disease in the general population.Hypertension research : official journal of the Japanese Society of Hypertension · 2024
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Amanda K Leonberg-YooDivision of Nephrology, Department of Medicine, Tufts Medical Center, Boston, MA.
Hocine TighiouartResearch Design Center/Biostatistics Research Center, Tufts CTSI and Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA.
Andrew S LeveyDivision of Nephrology, Department of Medicine, Tufts Medical Center, Boston, MA.
Gerald J BeckDepartment of Quantitative Health Sciences, Cleveland Clinic, Cleveland, OH.
Mark J SarnakDivision of Nephrology, Department of Medicine, Tufts Medical Center, Boston, MA. Electronic address: msarnak@tuftsmedicalcenter.org.
Tufts Medical Center · USCleveland Clinic · US

Funding

Epidemiology, Clinical Trials and Outcomes Research In NephrologyT32DK007777 · NIDDK · TUFTS MEDICAL CENTER · PI SARNAK, MARK J · 1999 to 2020
$4.1M
NIDDK NIH HHS T32 DK007777
6 · The paper itself

Abstract

backgroundLow urine potassium excretion, as a surrogate for dietary potassium intake, is associated with higher risk for hypertension and cardiovascular disease in a general population. Few studies have investigated the relationship of urine potassium with clinical outcomes in chronic kidney disease (CKD). STUDY

designLongitudinal cohort study. SETTING &

participantsThe MDRD (Modification of Diet in Renal Disease) Study was a randomized controlled trial (N = 840) conducted in 1989 to 1993 to examine the effects of blood pressure control and dietary protein restriction on kidney disease progression in adults aged 18 to 70 years with CKD stages 2 to 4. This post hoc analysis included 812 participants. PREDICTOR: The primary predictor variable was 24-hour urine potassium excretion, measured at baseline and at multiple time points (presented as time-updated average urine potassium excretion). OUTCOMES: Kidney failure, defined as initiation of dialysis therapy or transplantation, was determined from US Renal Data System data. All-cause mortality was assessed using the National Death Index.

resultsMedian follow-up for kidney failure was 6.1 (IQR, 3.5-11.7) years, with 9 events/100 patient-years. Median all-cause mortality follow-up was 19.2 (IQR, 10.8-20.6) years, with 3 deaths/100 patient-years. Baseline mean urine potassium excretion was 2.39±0.89 (SD) g/d. Each 1-SD higher baseline urine potassium level was associated with an adjusted HR of 0.95 (95% CI, 0.87-1.04) for kidney failure and 0.83 (95% CI, 0.74-0.94) for all-cause mortality. Results were consistent using time-updated average urine potassium measurements. LIMITATIONS: Analyses were performed using urine potassium excretion as a surrogate for dietary potassium intake. Results are obtained from a primarily young, nondiabetic, and advanced CKD population and may not be generalizable to the general CKD population.

conclusionsHigher urine potassium excretion was associated with lower risk for all-cause mortality, but not kidney failure.

Indexed as

Cohort StudiesFemaleHumansLongitudinal StudiesMaleMiddle AgedPotassiumRenal InsufficiencyRenal Insufficiency, ChronicPotassiumall-cause mortalitychronic kidney disease (CKD)dietary potassium intakeend-stage renal disease (ESRD)kidney failuremodifiable risk factorpotassium excretionUrine potassium

Identifiers

PMID27233381
PMCPMC6047752
OpenAlexW2398596652

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.