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Replacing 24-hour urine samples with overnight urine samples is questionable
Halmstad University, School of Social and Health Sciences (HOS), Centre of Research on Welfare, Health and Sport (CVHI).ORCID iD: 0000-0002-9291-9342
2009 (English)In: SVLS Abstrakt, 2009Conference paper, Published paper (Refereed)
Abstract [en]

Background: The objective of this study was to compare the interchangeability of spot urine samples and 24-hour urine samples in assessing dietary intake of electrolytes.

Method: Eighty-six healthy men between the ages of 55 and 88 and living at home in Cambridge, UK took part in the study. The volunteers were given three 80 mg tablets of para-aminobenzoic acid (PABA) to take with morning, midday and evening meals. One overnight (approximately eight hours) and one 24-h urine collection were used for comparison against each other. The study was approved by the Ethics Committee of the Dunn Clinical Nutrition Unit, Cambridge, UK.

Result: The regression line did not near x=y but was instead nearly parallel with the x-axis, illustrating that as 24-hour samples increased there was no increase in overnight samples of electrolytes. Fifty-five percent of the 24-h urine samples were complete.

Conclusion: Overnight urine samples cannot replace 24-hour urine samples. Many 24-h urine collections were not complete, which partly may explain the poor predictive value of overnight samples in this study and also other studies.

Place, publisher, year, edition, pages
2009.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:hh:diva-5658OAI: oai:DiVA.org:hh-5658DiVA, id: diva2:351075
Conference
Svenska Läkaresällskapet, Medicinska Riksstämman 2009
Available from: 2010-09-13 Created: 2010-09-11 Last updated: 2014-03-05Bibliographically approved

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Johansson, Gunnar

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CiteExportLink to record
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Citation style
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  • nn-NB
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Output format
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