Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in China

Twenty-four-hour urine sample collection is regarded as the gold standard for sodium intake evaluation, but the implementation can be difficult. The objective was to validate and evaluate the accuracy and feasibility of estimating sodium intake by four methods. A group of 268 healthy volunteers aged...

Full description

Bibliographic Details
Main Authors: Weiyi Gong, Yuxia Ma, Zechen Zhang, Jufeng Liang, Jiguo Zhang, Gangqiang Ding
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Nutrients
Subjects:
Online Access:https://www.mdpi.com/2072-6643/14/13/2736
_version_ 1797434045519364096
author Weiyi Gong
Yuxia Ma
Zechen Zhang
Jufeng Liang
Jiguo Zhang
Gangqiang Ding
author_facet Weiyi Gong
Yuxia Ma
Zechen Zhang
Jufeng Liang
Jiguo Zhang
Gangqiang Ding
author_sort Weiyi Gong
collection DOAJ
description Twenty-four-hour urine sample collection is regarded as the gold standard for sodium intake evaluation, but the implementation can be difficult. The objective was to validate and evaluate the accuracy and feasibility of estimating sodium intake by four methods. A group of 268 healthy volunteers aged 18–25 years was enrolled in this study. Twenty-four-hour urine samples as well as timed (morning, afternoon, evening, and overnight) urine samples were randomly collected in summer and winter. The sodium intake was estimated by four published methods—Kawasaki, INTERSALT, Tanaka, and Sun’s. The consistencies between estimated sodium intake and real measured values of 24-h urinary sodium excretion were compared by Bland–Altman plots in each of the methods. The 24-h urinary sodium analysis result indicated that average daily sodium intake was 3048.4 ± 1225.9 mg in summer and 3564.7 ± 1369.9 mg in winter. At the population level, the bias (estimated value-measured value) was the least with the INTERSALT method with afternoon (−39.7 mg; 95%CI: −164.7, 85.3 mg) and evening (−43.5 mg; 95%CI: −166.4, 79.5 mg) samples in summer. In winter, the Kawasaki method (162.1 mg; 95%CI: 13.5, 310.7 mg) was superior to others. Estimation of sodium intake using the four methods is affected by the time and temperature. In summer, the INTERSALT method provides the best estimation of the population’s mean sodium intake. The Kawasaki method is superior to other methods in winter.
first_indexed 2024-03-09T10:26:41Z
format Article
id doaj.art-d80d35e3f55642c4aa96a11288d14e35
institution Directory Open Access Journal
issn 2072-6643
language English
last_indexed 2024-03-09T10:26:41Z
publishDate 2022-06-01
publisher MDPI AG
record_format Article
series Nutrients
spelling doaj.art-d80d35e3f55642c4aa96a11288d14e352023-12-01T21:38:26ZengMDPI AGNutrients2072-66432022-06-011413273610.3390/nu14132736Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in ChinaWeiyi Gong0Yuxia Ma1Zechen Zhang2Jufeng Liang3Jiguo Zhang4Gangqiang Ding5Key Laboratory of Trace Elements Nutrition of National Health Commission, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, ChinaHebei Key Laboratory of Environment and Human Health, Department of Nutrition and Food Hygiene, School of Public Health, Hebei Medical University, Shijiazhuang 050017, ChinaHebei Key Laboratory of Environment and Human Health, Department of Nutrition and Food Hygiene, School of Public Health, Hebei Medical University, Shijiazhuang 050017, ChinaHebei Key Laboratory of Environment and Human Health, Department of Nutrition and Food Hygiene, School of Public Health, Hebei Medical University, Shijiazhuang 050017, ChinaKey Laboratory of Trace Elements Nutrition of National Health Commission, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, ChinaKey Laboratory of Trace Elements Nutrition of National Health Commission, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, ChinaTwenty-four-hour urine sample collection is regarded as the gold standard for sodium intake evaluation, but the implementation can be difficult. The objective was to validate and evaluate the accuracy and feasibility of estimating sodium intake by four methods. A group of 268 healthy volunteers aged 18–25 years was enrolled in this study. Twenty-four-hour urine samples as well as timed (morning, afternoon, evening, and overnight) urine samples were randomly collected in summer and winter. The sodium intake was estimated by four published methods—Kawasaki, INTERSALT, Tanaka, and Sun’s. The consistencies between estimated sodium intake and real measured values of 24-h urinary sodium excretion were compared by Bland–Altman plots in each of the methods. The 24-h urinary sodium analysis result indicated that average daily sodium intake was 3048.4 ± 1225.9 mg in summer and 3564.7 ± 1369.9 mg in winter. At the population level, the bias (estimated value-measured value) was the least with the INTERSALT method with afternoon (−39.7 mg; 95%CI: −164.7, 85.3 mg) and evening (−43.5 mg; 95%CI: −166.4, 79.5 mg) samples in summer. In winter, the Kawasaki method (162.1 mg; 95%CI: 13.5, 310.7 mg) was superior to others. Estimation of sodium intake using the four methods is affected by the time and temperature. In summer, the INTERSALT method provides the best estimation of the population’s mean sodium intake. The Kawasaki method is superior to other methods in winter.https://www.mdpi.com/2072-6643/14/13/2736sodiumsalturinemethodsassessment
spellingShingle Weiyi Gong
Yuxia Ma
Zechen Zhang
Jufeng Liang
Jiguo Zhang
Gangqiang Ding
Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in China
Nutrients
sodium
salt
urine
methods
assessment
title Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in China
title_full Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in China
title_fullStr Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in China
title_full_unstemmed Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in China
title_short Validation of 4 Estimating Methods to Evaluate 24-h Urinary Sodium Excretion: Summer and Winter Seasons for College Students in China
title_sort validation of 4 estimating methods to evaluate 24 h urinary sodium excretion summer and winter seasons for college students in china
topic sodium
salt
urine
methods
assessment
url https://www.mdpi.com/2072-6643/14/13/2736
work_keys_str_mv AT weiyigong validationof4estimatingmethodstoevaluate24hurinarysodiumexcretionsummerandwinterseasonsforcollegestudentsinchina
AT yuxiama validationof4estimatingmethodstoevaluate24hurinarysodiumexcretionsummerandwinterseasonsforcollegestudentsinchina
AT zechenzhang validationof4estimatingmethodstoevaluate24hurinarysodiumexcretionsummerandwinterseasonsforcollegestudentsinchina
AT jufengliang validationof4estimatingmethodstoevaluate24hurinarysodiumexcretionsummerandwinterseasonsforcollegestudentsinchina
AT jiguozhang validationof4estimatingmethodstoevaluate24hurinarysodiumexcretionsummerandwinterseasonsforcollegestudentsinchina
AT gangqiangding validationof4estimatingmethodstoevaluate24hurinarysodiumexcretionsummerandwinterseasonsforcollegestudentsinchina