Evidence map›Paper›PMID 24204003›Full record

Trial reportJournal of the American Society of Nephrology : JASN2013

A randomized trial of dietary sodium restriction in CKD.

Emma J McMahon, Judith D Bauer, Carmel M Hawley, Nicole M Isbel, Michael Stowasser, David W Johnson, Katrina L Campbell

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of the American Society of Nephrology : JASN, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 135 papers, 14 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
135citing papers in PubMed, 14 pooled it
–field-weighted citation impact
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

135 citing papers in PubMed, 14 syntheses or guidelines pooled it.

  1. The Japanese Society of Hypertension Guidelines for the management of elevated blood pressure and hypertension 2025 (JSH2025).Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Guideline
  2. Guideline
  3. Pooled it
  4. Pooled it
  5. Guideline
  6. Altered dietary salt intake for people with chronic kidney disease.The Cochrane database of systematic reviews · 2021
    Pooled it
  7. Pooled it
  8. Pooled it
  9. Guideline
  10. Pooled it
  11. Guideline
  12. Pooled it
  13. Chronic kidney disease.BMJ clinical evidence · 2015
    Pooled it
  14. The science of salt: a systematic review of clinical salt studies 2013 to 2014.Journal of clinical hypertension (Greenwich, Conn.) · 2015
    Pooled it
  15. Trial
  16. Trial
  17. Dietary sodium restriction decreases urinary NGAL in older adults with moderately elevated systolic blood pressure free from chronic kidney disease.Journal of investigative medicine : the official publication of the American Federation for Clinical Research · 2020
    Trial
  18. Trial
  19. Variation in Sodium Intake and Intra-individual Change in Blood Pressure in Chronic Kidney Disease.Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation · 2018
    Trial
  20. IL-1 Inhibition and Vascular Function in CKD.Journal of the American Society of Nephrology : JASN · 2017
    Trial

75 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Emma J McMahonPrincess Alexandra Hospital, Brisbane, Australia; and.
Judith D Bauer
Carmel M Hawley
Nicole M Isbel
Michael Stowasser
David W Johnson
Katrina L Campbell

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is a paucity of quality evidence regarding the effects of sodium restriction in patients with CKD, particularly in patients with pre-end stage CKD, where controlling modifiable risk factors may be especially important for delaying CKD progression and cardiovascular events. We conducted a double-blind placebo-controlled randomized crossover trial assessing the effects of high versus low sodium intake on ambulatory BP, 24-hour protein and albumin excretion, fluid status (body composition monitor), renin and aldosterone levels, and arterial stiffness (pulse wave velocity and augmentation index) in 20 adult patients with hypertensive stage 3-4 CKD as phase 1 of the LowSALT CKD study. Overall, salt restriction resulted in statistically significant and clinically important reductions in BP (mean reduction of systolic/diastolic BP, 10/4 mm Hg; 95% confidence interval, 5 to 15 /1 to 6 mm Hg), extracellular fluid volume, albuminuria, and proteinuria in patients with moderate-to-severe CKD. The magnitude of change was more pronounced than the magnitude reported in patients without CKD, suggesting that patients with CKD are particularly salt sensitive. Although studies with longer intervention times and larger sample sizes are needed to confirm these benefits, this study indicates that sodium restriction should be emphasized in the management of patients with CKD as a means to reduce cardiovascular risk and risk for CKD progression.

Indexed as

AgedBlood PressureCross-Over StudiesDiet, Sodium-RestrictedDouble-Blind MethodFemaleHumansHypertension, RenalMaleMiddle AgedNew ZealandPatient ComplianceRenal Insufficiency, ChronicRisk FactorsRisk Reduction BehaviorSodium Chloride, DietarySodium Chloride, Dietary

Identifiers

PMID24204003
PMCPMC3839553

What OpenQuestion holds

Textmetadata
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.