Dietary Phosphate and Serum Phosphorus

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Total Enrollment

7895 participants

Study Classification

OBSERVATIONAL

Study Start Date

2003-01-31

Study Completion Date

2009-07-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Overall study design is to review National Health and Nutrition Examination Survey (NHANES) data 1999-2008 for nutrition risk according to kidney function. Substudies will be performed to review the association of nutrients and overall dietary intake compared to biomarkers available in NHANES during this period.

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Study of Dietary Phosphate and Mineral Homeostasis in Early Chronic Kidney Disease

NCT00755690

Kidney Diseases

COMPLETED NA

Phosphorus Absorption in Healthy Adults and in Patients With Moderate Chronic Kidney Disease

NCT03108222

Chronic Kidney Disease Mineral and Bone Disorder

UNKNOWN

Dietary Phosphorus Load and Postprandial Serum Phosphate in HD Patients

NCT04845724

Hemodialysis

COMPLETED NA

Acute Changes in the Mineral Metabolism After a High Phosphorous Containing Meal in Dialysis Patients

NCT03868371

Chronic Kidney Disease Stage 5 Mineral Metabolism Disorder

COMPLETED NA

Assessing How the Body Responds to Increased Phosphate Intake, and How This Response Depends on Age and Sex.

NCT07149337

Aging Kidney Disease Mineral Metabolism

NOT_YET_RECRUITING NA

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Data from NHANES 2003-2006 were used to evaluate the relationship between estimated dietary phosphorus intake and the measured serum phosphorus. The following variables were used:

1. Demographics: Age, sex, race/ethnicity
2. Dietary variables: Foods, food groups (as reported by the United States Department of Agriculture (USDA) method, further standardized to the Academy of Nutrition and Dietetics method for portion size and then divided into groups having inorganic phosphate additives or no inorganic phosphate additives), food weight (g), phosphorus (mg), dietary supplements
3. Socioeconomic variables: education, family income
4. Laboratory variables: serum creatinine, phosphorus; urine albumin, creatinine
5. Clinical assessments: hypertension (proportion having blood pressure ≥140 millimeters of mercury (mmHg) diastolic or ≥90 mmHg systolic or taking antihypertensive medications); hyperglycemia (proportion having serum glucose \>126 mg/dL or taking medications for diabetes); kidney function based on Chronic Kidney Disease Epidemiology Collaboration (2009) equation, evaluated in 15 milliliters/min/1.73m2 increments from \<15 to \>105; anthropometrics (BMI, kg/m2; obesity class I, II, III)

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Phosphorus Metabolism Disorders

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Adults 20-85 years

Data from adults 20-85 years old will be evaluated for serum phosphorus concentration.

No interventions assigned to this group

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Serum creatinine

Exclusion Criteria

* Pregnancy
* No dietary intake interview
* Dietary intake interview not valid
* Answered the question "Have you had dialysis in the past year?" as "Yes"

Minimum Eligible Age

20 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes