Analysis of presumed sodium intake of office workers using 24-hour urine analysis and correlation matrix between variables

Hyun-Hee Kim; Yeon-Kyung Lee

doi:10.4163/kjn.2013.46.1.26

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Kim and Lee: Analysis of presumed sodium intake of office workers using 24-hour urine analysis and correlation matrix between variables

Research Article

Korean Journal of Nutrition 2013; 46(1): 26-33.

Published online: 28 February 2013

DOI: https://doi.org/10.4163/kjn.2013.46.1.26

Analysis of presumed sodium intake of office workers using 24-hour urine analysis and correlation matrix between variables

Hyun-Hee Kim, Yeon-Kyung Lee

Department of Food Science and Nutrition, Kyungpook National University, Daegu 702-701, Korea.

To whom correspondence should be addressed. (yklee@knu.ac.kr)

Received 29 August 2012 Revised 11 October 2012 Accepted 24 January 2013

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The purpose of this study was to investigate the sodium intake of office workers using 24-hour urine analysis and to analyze the correlation matrix between variables. The sodium intake of the subjects (n = 137), based on a 24-hr sodium excretion period, was male (n = 56) 6072.4 mg and female (n = 81) 5,168.2 mg. Urinary sodium excretion showed significant positive correlation with BMI, frequency of eating out, expenditure of eating out, salty taste assessment and high-salt dietary behavior. Analysis of urinary sodium excretion showed significant positive correlation with intake frequencies of cabbage kimchi, broiled fish, feast noodle and rice with leaf wraps. Based on the results of multiple regression, urinary sodium excretion was found to be related to intake frequencies of cabbage kimchi, broiled fish, rice with leaf wraps and high score of high-salt dietary behavior.

Keywords: 24-hr sodium excretion, high-salt dietary behavior, frequency of eating out

Figures and Tables

Table 1

Anthropometric measurement of subjects

BMI: Body Mass Index [weight (kg)/height (m²)], SBP: Systolic Blood Pressure, DBP: Diastolic Blood Pressure

Mean ± S.D.

^*: p < 0.05, ^***: p < 0.001 by t-test

Table 2

Sodium excretion and intake of subjects

Mean ± S.D.

^*: p < 0.05 by t-test

Table 3

High-salt dietary behavior by gender

Mean ± S.D.

^*: p < 0.05

Table 4

Correlation coefficients between sodium related variables and urinary sodium excretions

BMI: Body Mass Index [weight (kg)/height (m²)], SBP: Systolic Blood Pressure, DBP: Diastolic Blood Pressure

^*: p < 0.05, ^*^*: p < 0.01

Table 5

Correlation coefficients between the intake frequency of foods and urinary sodium excretions

^*: p < 0.05, ^**: p < 0.01

Table 6

Summary of the multiple regression analysis for unitary sodium as dependent variable

BMI: Body Mass Index, [weight (kg)/height (m²)], Model df: 15, Model F: 4.63

^*: p < 0.05

Notes

This research was supported by the 2008 National Health Promotion Fund.

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