BACKGROUND The sodium intake of Koreans was higher than that recommended by the World Health Organization. Urinary sodium, which is correlated with sodium intake, can be easily calculated by the Tanaka's equation. This study aimed to evaluate the association between urinary sodium and metabolic syndrome in Korean adults using the 2010-2011 Korean National Health and Nutrition Examination Survey...

INTRODUCTION We present data from the Korean National Health and Nutritional Examination Survey (KNHANES) 2008-2009 on the association between 25-hydroxyvitamin D[25(OH)D] status and type 2 diabetes in a representative sample of the adult Korean population. METHODS This study was based on data obtained from the KNHANES 2008-2009, which was conducted for 3 years (2007-2009) using a rolling sam...

BACKGROUND/AIMS Smoking is widely acknowledged as the single most important risk factor for chronic obstructive pulmonary disease (COPD). However, the risk of COPD in nonsmokers exposed to secondhand smoke remains controversial. In this study, we investigated the association of secondhand smoke exposure with COPD prevalence in nonsmokers who reported never smoking. METHODS This study was base...

There were several numerical errors in this article, and we have corrected data in the abstract and results sections. First, in the results section of the abstract (page 413, 1st line), the prevalence rates of underweight in men and women were reversed and should read as follows: “4.7%, 3.3%, 3.4%, 3.3%, 2.7%, and 2.6%, respectively, in men (P for trend = 0.03, β = −0.002) and 5.4%, 6.1%, 5.8%,...

which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Shift work is a reasonably common form of employment and recently, the number of shift workers has increased rapidly. A Korean working condition survey reported that the proportion of employees involved in shift work increased from 7.2% in Many diseases and h...

Objectives The purpose of this study was to identify the associated factors with physical activities in people chronic obstructive pulmonary diseases (COPD). Methods This enrolled 1,176 COPD patients aged 40 and over who had function test 2013-2015 Korean National Health Nutrition Examination Survey (KNHANES VI). measured were self-reported walking strength exercise. Descriptive statistics, chi...