Evidence map›Paper›PMID 31089946›Full record

ArticleInternational urology and nephrology2019

Twenty-four-hour urine osmolality as a representative index of adequate hydration and a predictor of recurrence in patients with urolithiasis.

Ho Won Kang, Sung Pil Seo, Yun-Sok Ha, Won Tae Kim, Yong-June Kim, Seok-Joong Yun, Wun-Jae Kim, Sang-Cheol Lee

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Article in International urology and nephrology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Ho Won KangDepartment of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, 776 1sunhwan-ro, Seowon-gu, Cheonju, 28644, Korea.
Sung Pil SeoDepartment of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, 776 1sunhwan-ro, Seowon-gu, Cheonju, 28644, Korea.
Yun-Sok HaDepartment of Urology, School of Medicine, Kyungpook National University, Daegu, Korea.
Won Tae KimDepartment of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, 776 1sunhwan-ro, Seowon-gu, Cheonju, 28644, Korea.
Yong-June KimDepartment of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, 776 1sunhwan-ro, Seowon-gu, Cheonju, 28644, Korea.
Seok-Joong YunDepartment of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, 776 1sunhwan-ro, Seowon-gu, Cheonju, 28644, Korea.
Wun-Jae KimDepartment of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, 776 1sunhwan-ro, Seowon-gu, Cheonju, 28644, Korea.
Sang-Cheol LeeDepartment of Urology, College of Medicine and Institute for Tumor Research, Chungbuk National University, 776 1sunhwan-ro, Seowon-gu, Cheonju, 28644, Korea. lscuro@chungbuk.ac.kr.ORCID http://orcid.org/0000-0002-4163-2210

Funding

International Science and Business Belt Program 2015-DD-RD-0070
6 · The paper itself

Abstract

purposeTo determine the value of 24-h urine osmolality (UOsm) as a representative index of adequate hydration and predictor of stone recurrence in patients with urolithiasis.

methodsMedical records of consecutive patients presenting with renal or ureteric stones between 1994 and 2017 were retrospectively reviewed. Patients were grouped according to the results of 24-h UOsm (low ≤ 564 mOsm/kg H

resultsThe low urine concentration group were more likely to be older, to be female, and to have a lower body mass index and higher glomerular filtration rate than the high concentration group (each P < 0.005). A positive correlation was seen between 24-h UOsm and urinary calcium, sodium, uric acid, and magnesium excretion and 24-h specific gravity; a negative correlation was seen with 24-h urine volume. Stone-forming constituents, such as calcium and uric acid, were significantly higher in the high urine concentration group. Kaplan-Meier estimates showed that the low urine concentration group had a significantly longer stone recurrence-free period than the high urine concentration group (log-rank test, P < 0.001). In multivariate Cox regression analyses, 24-h UOsm was seen to be an independent risk factor for stone recurrence.

conclusionsUOsm is a promising approach to assessing hydration and predicting stone recurrence in patients with urolithiasis. Maintaining UOsm < 564 mOsm/kg H

Indexed as

Organism Hydration StatusUrolithiasisAge FactorsBody Mass IndexCorrelation of DataFemaleGlomerular Filtration RateHumansMaleMiddle AgedOsmolar ConcentrationRepublic of KoreaRisk AssessmentSecondary PreventionSex FactorsUrinalysisOsmolar concentrationRecurrenceUrinary calculi

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.