The aim of the study is to assess the association between the calcium and phosphorus balance and the stage of kidney disease measured by creatinine clearence in patients with chronic kidney disease stage 4 and 5. The balance is measured a measurement between the recorded diatery intake and the urinary excretion. Additionally a comparison between image based diatery accessment and weighted records will be measured
A glomerular filtration rate of <30 ml ml/min/1.73m2
18 years and above
None
Patients with chronic kidney disease stage 4-5
Cohort
Prospective
Not listed
Comparison of diatery photograph method with weighted records.
The intake of calcium and phosphate assesed by the 24 hour photos and the 72 hour weighing of food and fluid items will be compared.
Calcium and phosphate balance in relation to the stage of kidney disease
Measured by the diatery intake of calcium and phosphate in relation to the urinary calcium and phosphate excretion
Urinary Calcium
mmol/day
Urinary phosphate
mmol/day
Calcium intake total and the distribution of vegetarian and animal sources
mg/day
Phosphate intake total and the distribution of vegetarian and animal sources
mg/day
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University of Copenhagen
Lead sponsor
Herlev Hospital
Collaborator
