The Relationship between Anemia and Vitamin D Deficiency in Korean Adults : Using the Fifth Korea National Health and Nutrition Examination Survey

While exposure to sunlight is a well-documented primary source of vitamin D supply, factors leading to vitamin D deficiency vary according to population characteristics. Using nationwide data from the Korea National Health and Nutrition Examination Survey (KNHANES), we aimed to investigate a diverse range of potential factors in association with vitamin D deficiency. Overall, 21,208 participants aged ≥20 years were selected from KNHANES conducted between 2010 and 2014. The associations between various environmental and occupational factors and vitamin D deficiency (defined as serum 25-hydroxyvitamin D [25(OH)D] < 20 ng/mL) were evaluated in logistic regression models after controlling for potential covariates and also after stratification for age and sex. Under given criteria, 15,138 (71.4%) participants were vitamin D deficient. Significant associations were observed between vitamin D deficiency and average environmental temperature and radiation, weekly walking frequency, type of occupation, and shift work. When participants were stratified by age and sex, we observed greater associations of vitamin D deficiency with walking frequency among young males (odds ratio [OR] and 95% confidence interval [95% CI]: 1.24 [1.05–1.47] for those walking <5 times per week compared to those walking ≥5 times per week) and shift work (OR [95% CI]: 1.40 [1.10–1.78] for those working at night compared to those working during the day). We also observed a significant association of vitamin D deficiency with educational attainment (OR [95% CI]: 1.43 [1.09–1.89] for those with ≤middle school compared to those with ≥high school) among older group of females. This study suggests that vitamin D deficiency is related to geographical conditions and subpopulation characteristics. The age and sex-specific associations may urge the effective promotion of vitamin D supply recommendations.

Download Full-text

The relationship between dental caries and obesity in Korean adults : The 6th Korea National Health and Nutrition Examination Survey (6th KNHANES, 2013-2015)

Journal of Korean society of Dental Hygiene ◽

10.13065/jksdh.20200054 ◽

2020 ◽

Vol 20 (5) ◽

Keyword(s):

Dental Caries ◽

National Health ◽

Nutrition Examination Survey ◽

Korean Adults ◽

Health And Nutrition ◽

The Relationship

Download Full-text

Sex-speciﬁc in the relationship between hyperuricemia and pulse pressure in non-diabetic Korean adults: the 2017 Korean National Health and Nutrition Examination Survey

10.31083/jomh.2021.064 ◽

2021 ◽

Keyword(s):

Blood Pressure ◽

Uric Acid ◽

Confidence Interval ◽

National Health ◽

Pulse Pressure ◽

Nutrition Examination Survey ◽

Korean Adults ◽

Health And Nutrition ◽

The Relationship ◽

Significant Factors

Background and objective: The present study assesses the relationship between hyperuricemia and pulse pressure (PP) in non-diabetic Korean adults. Material and methods: Data from 5122 subjects (2251 men and 2871 women) in the seventh Korean National Health and Nutrition Examination Survey (KNHANES VII-2, 2017) were analyzed. Results: Systolic blood pressure (SBP) and PP were signiﬁcant factors determining the odds ratios (ORs) for hyperuricemia (uric acid ≥7.0 mg/dL in men or ≥6.0 mg/dL in women) in men and the overall population. In women, SBP, diastolic blood pressure (DBP), and PP were not signiﬁcant factors determining the OR for hyperuricemia. After adjusting for related variables, the OR of hyperuricemia was signiﬁcantly higher in the high PP group (PP >60.0 mmHg) for men (OR, 1.760; 95% conﬁdence interval [CI], 1.152--2.688) and the overall population (OR, 1.557; 95% CI, 1.132--2.140) compared with the normal PP group, but this trend was not seen in women (OR, 1.060; 95% CI, 0.646--1.740). Conclusions: Hyperuricemia was positively associated with PP in non-diabetic Korean men but not in women.

Download Full-text