john-accuracyandusefulness-2016.pdf (568.86 kB)
Accuracy and usefulness of select methods for assessing complete collection of 24-hour urine: a systematic review.
journal contribution
posted on 2016-05-01, 00:00 authored by K A John, M E Cogswell, N R Campbell, Caryl NowsonCaryl Nowson, B Legetic, A J M Hennis, S M PatelTwenty-four-hour urine collection is the recommended method for estimating sodium intake. To investigate the strengths and limitations of methods used to assess completion of 24-hour urine collection, the authors systematically reviewed the literature on the accuracy and usefulness of methods vs para-aminobenzoic acid (PABA) recovery (referent). The percentage of incomplete collections, based on PABA, was 6% to 47% (n=8 studies). The sensitivity and specificity for identifying incomplete collection using creatinine criteria (n=4 studies) was 6% to 63% and 57% to 99.7%, respectively. The most sensitive method for removing incomplete collections was a creatinine index <0.7. In pooled analysis (≥2 studies), mean urine creatinine excretion and volume were higher among participants with complete collection (P<.05); whereas, self-reported collection time did not differ by completion status. Compared with participants with incomplete collection, mean 24-hour sodium excretion was 19.6 mmol higher (n=1781 specimens, 5 studies) in patients with complete collection. Sodium excretion may be underestimated by inclusion of incomplete 24-hour urine collections. None of the current approaches reliably assess completion of 24-hour urine collection.
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Journal
Journal of clinical hypertensionVolume
18Issue
5Pagination
456 - 467Publisher
WileyLocation
Hoboken, N. J.Publisher DOI
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eISSN
1751-7176Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2016, WileyUsage metrics
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