NCT01552317

Brief Summary

Patients with kidney disease benefit from reducing the amount of salt in the food that they eat. The benefits include lower blood pressure and better kidney function. Therefore, lowering the amount of salt that is eaten could reduce the number of people who will develop kidney failure. The effect on blood pressure could also reduce the number of strokes and heart attacks. Similar benefits are also seen for people without kidney disease. Guidelines for patients with kidney disease recommend that they lower the amount of salt that they eat, but most patients do not manage to do this. The reasons for this are not unclear, but are likely to reflect the difficulty that patients have in reducing the amount of salt in their food and the nature of the advice that they are given. The investigators have developed a package of interventions to help patients to make healthier choices that will lower their salt intake. The package helps patients to learn about salt in food and how to avoid it. It provide practical advice on cutting down on salt using information booklets, text messages, emails, telephone calls, and a website. Participants will be recruited from hospital kidney clinics and general practice. The investigators will randomly allocate participants to receive either the normal care that they would get or to receive the new package of interventions to help them lower salt. The package of interventions will involve patients receiving text messages, telephone calls, emails and written information. They will complete a questionnaire and collect urine samples which will can be used to measure the amount of salt that they are eating. No more than 6 visits will be required. The study is funded by the British Renal Society which is a charity that funds research to help patients with kidney disease.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
201

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Apr 2012

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 1, 2012

Completed
12 days until next milestone

First Posted

Study publicly available on registry

March 13, 2012

Completed
19 days until next milestone

Study Start

First participant enrolled

April 1, 2012

Completed
2.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2014

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2014

Completed
9.8 years until next milestone

Results Posted

Study results publicly available

August 19, 2024

Completed
Last Updated

August 19, 2024

Status Verified

December 1, 2014

Enrollment Period

2.6 years

First QC Date

March 1, 2012

Results QC Date

September 7, 2023

Last Update Submit

March 20, 2024

Conditions

Keywords

chronic kidney disease

Outcome Measures

Primary Outcomes (2)

  • 24-hour Urinary Sodium Excretion

    To evaluate whether a new care bundle helps patients to reduce their salt intake.

    1 month

  • 24-hour Urinary Salt Excretion

    1 month

Secondary Outcomes (4)

  • 24-hour Urinary Sodium Excretion

    3 months

  • 24-hour Urinary Salt Excretion

    3 months

  • 24-hour Urinary Sodium Excretion

    11 months

  • 24-hour Urinary Salt Excretion

    11 months

Study Arms (2)

Intervention

EXPERIMENTAL

A package of advice and interventions to help participants reduce their salt intake.

Other: OxSalt care bundle

Normal care

NO INTERVENTION

This group will receive the normal care that they would get anyway.

Interventions

A care bundle consisting of a range of features to help patients to reduce their salt intake such as reminder emails, phone calls and a website.

Intervention

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Participant is willing and able to give informed consent for participation in the study.
  • Male or Female, aged 18 years or above.
  • Diagnosed with CKD and an eGFR ≥ 20 ml/min/1.73m2
  • Participant has clinically acceptable laboratory data available to confirm the diagnosis.
  • Able (in the opinion of the Investigators) and willing to comply with all study requirements.
  • Willing to allow his or her General Practitioner and consultant, if appropriate, to be notified of participation in the study

You may not qualify if:

  • Female participants who is pregnant, lactating or planning pregnancy during the course of the study.
  • Any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the study, or may influence the result of the study, or the participant's ability to participate in the study.
  • Inability to understand English or special communication needs because the interventions will use English and is not funded to deal with special communication needs.
  • Known salt losing nephropathy

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Oxford University Hospitals NHS Trust

Oxford, Oxfordshire, OX3 7LE, United Kingdom

Location

Related Publications (2)

  • O'Callaghan CA, Camidge C, Thomas R, Reschen ME, Maycock AJ, Lasserson DS, Fox RA, Thomas NPB, Shine B, James T. Evaluation of a Simple Low-cost Intervention to Empower People with CKD to Reduce Their Dietary Salt Intake: OxCKD1, a Multicenter Randomized Controlled Trial. Kidney360. 2023 Jul 1;4(7):890-898. doi: 10.34067/KID.0000000000000160. Epub 2023 May 31.

  • McMahon EJ, Campbell KL, Bauer JD, Mudge DW, Kelly JT. Altered dietary salt intake for people with chronic kidney disease. Cochrane Database Syst Rev. 2021 Jun 24;6(6):CD010070. doi: 10.1002/14651858.CD010070.pub3.

Related Links

MeSH Terms

Conditions

Renal Insufficiency, Chronic

Condition Hierarchy (Ancestors)

Renal InsufficiencyKidney DiseasesUrologic DiseasesFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesMale Urogenital DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Results Point of Contact

Title
Principal Investigator
Organization
University of Oxford

Study Officials

  • Christopher A O'Callaghan, MD PhD

    University of Oxford, UK

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 1, 2012

First Posted

March 13, 2012

Study Start

April 1, 2012

Primary Completion

November 1, 2014

Study Completion

November 1, 2014

Last Updated

August 19, 2024

Results First Posted

August 19, 2024

Record last verified: 2014-12

Locations