NCT00394576

Brief Summary

The relationship between elevated phosphorus levels and morbidity and mortality in patients with chronic kidney disease (CKD) is well recognized, and dietary phosphorus restriction is a mainstay of phosphate management. Current study is an effort to test the effect of a web-based nutritional educational intervention, Kidney School(KS), to improve phosphorous knowledge and control phosphorous intake in CKD patients.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
54

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Nov 2006

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

October 30, 2006

Completed
2 days until next milestone

First Posted

Study publicly available on registry

November 1, 2006

Completed
Same day until next milestone

Study Start

First participant enrolled

November 1, 2006

Completed
2.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2009

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 1, 2009

Completed
Last Updated

May 6, 2019

Status Verified

May 1, 2019

Enrollment Period

2.6 years

First QC Date

October 30, 2006

Last Update Submit

May 1, 2019

Conditions

Keywords

Kidney SchoolShort Test of Functional Health LiteracyChronic Kidney Disease Knowledge Assessment Tool of NutritionShort Form 12 version 2Three Day Dietary DiaryKidney Disease Self-Management Survey

Outcome Measures

Primary Outcomes (6)

  • Gain in phosphorus knowledge as assessed by the chronic kidney disease Knowledge Assessment Tool (CKDKAT) of nutrition.

    The CKDKAT of nutrition is a revised version of the original CKDKAT, which addresses only nutritional knowledge specific to chronic kidney disease (CKD). 15 of 25 questions are phosphorus-specific, with the remaining 10 concerning sodium, potassium and protein intake.

    4 to 8 weeks post intial questionnaire/survey

  • Compliance with dietary phosphorous will be measured by serum phosphorous level.

    Measurement of compliance with dietary phosphorous will be measured by serum phosphorous level. In CKD, Phosphorus excretion diminishes, leading to an increase in serum phosphorus levels.

    4 to 8 weeks after initial questionnaire/survey appointment

  • Compliance with dietary phosphorous will be measured by serum calcium level

    Measurement of compliance with dietary phosphorous will be measured by serum calcium level. In CKD, calcium is not reabsorbed, leading to decreased serum calcium.

    4 to 8 weeks after initial questionaire/survey appointment

  • Compliance with dietary phosphorous will be measured by para thyroid hormone (PTH) level

    Measurement of compliance with dietary phosphorous will be measured by para thyroid hormone (PTH) level. In CKD, Both decreased serum calcium levels and increased serum phosphorus levels stimulate excessive secretion of PTH.

    4 to 8 weeks after initial questionnaire/survey appointment

  • Compliance with dietary phosphorous will be measured by serum calcium phosphorus product.

    Measurement of compliance with dietary phosphorous will be measured by serum calcium phosphorus product.

    4 to 8 weeks after initial questionnaire/survey appointment

  • Compliance with dietary phosphorus intake will be measured by using 24 hour recall diary.

    For measuring compliance with dietary phosphorus intake, data will be collected by 24 hour recall diaries. Nutrient analysis data will be analyzed by Food Processor SQL Nutrition Software (ESHA Research, Salem, Oregon)

    4 to 8 weeks after initial questionnaire/survey appointment

Secondary Outcomes (1)

  • Correlations between dietary phosphorus intake, serum phosphorous levels and circulating endothelial cells (CECs) in CKD

    2 years

Study Arms (2)

usual care plus Internet-based nutrition module

EXPERIMENTAL

usual care plus Internet-based nutrition module

Behavioral: Internet-based nutrition module along with usual care

usual care

ACTIVE COMPARATOR

usual care

Behavioral: usual care

Interventions

usual care plus Internet-based nutrition module

usual care plus Internet-based nutrition module
usual careBEHAVIORAL

usual care

usual care

Eligibility Criteria

Age18 Years - 90 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age greater than or equal to 18 and less than 90
  • Chronic kidney disease stage 3, 4 or 5
  • Adequate visual acuity with correction to allow discrimination of 14-point type
  • Ability to read English
  • Ability to provide informed consent

You may not qualify if:

  • Anticipated need for renal replacement therapy within 60 days
  • Prison population

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

UW Health Kidney Clinic and Wisconsin Dialysis

Madison, Wisconsin, 53713, United States

Location

Related Publications (1)

  • Campbell ZC, Dawson JK, Kirkendall SM, McCaffery KJ, Jansen J, Campbell KL, Lee VW, Webster AC. Interventions for improving health literacy in people with chronic kidney disease. Cochrane Database Syst Rev. 2022 Dec 6;12(12):CD012026. doi: 10.1002/14651858.CD012026.pub2.

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

Study Officials

  • Jonathan B Jaffery, MD

    School of Medicine and Public Health, University of Wisconsin

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
FACTORIAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 30, 2006

First Posted

November 1, 2006

Study Start

November 1, 2006

Primary Completion

June 1, 2009

Study Completion

June 1, 2009

Last Updated

May 6, 2019

Record last verified: 2019-05

Locations