• Journal of Nutrition and Health
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• v.50 no.4
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• pp.361-375
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• 2017

Purpose: The purpose of this study was to investigate the nutritional status of 3~5 year old children attending kindergarten and childcare facilities in 2010 and 2014. Methods: Data were obtained from the 2010 and 2014 Korea National Health and Nutrition Examination Surveys (KNHANES) and included 509 subjects aged 3~5 years old attending kindergarten and childcare facilities. Results: In 2014, rate of skipping meals by children was 16.2%, an increase of 5.5% compared with the rate of skipping meals by children in 2010. Calcium intake in 2014 was 397.41 mg at 3 years old, 419.27 mg at 4 years old, and 414.01 mg at 5 years old. For the mean nutrient adequacy ratio (MAR) of subjects in 2010 and 2014, MAR at 3 years old (0.86) was significantly lower than those at 4 and 5 years old (0.90, 0.91) (p < 0.01). In 2010 and 2014, EAR intake at 3 years old (2.72) was significantly higher than those at 4 years old (2.14) and 5 years olds (1.92) (p < 0.01). Conclusion: As a result, compared with 2010 before establishment of the Children's foodservice management center, there was no improvement in the polarization of nutrient intake of children in 2014. Therefore, researchers believe that a continuous monitoring system developed by nutrition experts and children's foodservice management center are needed to improve the nutritional status of children. Of children between the ages of 3~5 years old, those with intakes under EAR were mostly 3 years old. Therefore, researchers suggest that the infant age group of KDRIs, which is classified as 1~2 years old and 3~5 years old, needs to be reestablished considering the growth and development of infants.

• Journal of the Korean Dietetic Association
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• v.29 no.1
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• pp.31-48
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• 2023

This study evaluated the nutrient adequacy ratio (NAR) and depression based on the sleep duration of adult women using data from the Korea National Health and Nutrition Examination Survey (KNHANES) 2016 and 2018. A total of 4,507 subjects were divided into two groups: sleep hours<7 (lack of sleep, LS) and 7≤sleep hours (normal sleep, NS). For a more detailed analysis, the subjects were further divided into normal sleep with no depression (NSND) and lack of sleep with depression (LSWD) groups. When compared with NS group, the nutrient intake of the LS group was observed to be higher in carbohydrates (P<0.05) and thiamine (P<0.01), but had a significantly lower mean nutrient adequacy ratio (P<0.05). Also, the LS group showed a higher frequency of early menopause (P<0.001) and depression (P<0.05) than the NS group. In the analysis of anthropometry and blood parameters of the subjects based on their sleep duration, the LS group showed a lower body mass index (BMI, P<0.05), lower blood creatinine (P<0.01), glycated hemoglobin (P<0.05), and high-density lipoprotein (HDL) cholesterol (P<0.01) levels adjusted by age and menopause than the NS group. When compared to the NSND group, the LSWD group had a lower intake of cholesterol (P<0.05), vitamin A (P<0.05), vitamin C (P<0.05), and folic acid (P<0.05). There was no variation in the menopausal status, NAR, and mean nutrient adequacy ratio between the NSND and LSWD groups. However, there were differences in total blood cholesterol (P<0.05) and depression based on sleep duration. Apart from nutritional status, differences in BMI and blood parameters were observed based on sleep duration.

• Journal of muscle and joint health
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• v.30 no.2
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• pp.83-92
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• 2023

Purpose: This study aims to compare and analyze the changes in the physical and mental health status of middle-aged women before and after menopause and their quality of life over the past 10 years. Methods: A descriptive study was conducted by using secondary data from the 4th and 7th Korea National Health and Nutrition Examination Survey (KNHANES) involving middle-aged women in menopause (N=8,363). Data were analyzed using the complex sample x² test. Results: Compared to 10 years ago, notable changes were observed in general characteristics. These included increase in age, education level, economic activity, and urban residency. In addition, there was an increase in alcohol consumption, a decrease in smoking, and a decline in regular exercise. The study also observed changes in obesity rates and an increase in dyslipidemia and stress levels, along with positive changes across all aspects of quality of life. Conclusion: The results indicate temporal changes in general characteristics, major physical and mental health factors, and the quality of life of middle-aged women in menopause. Thus, it is essential to consider these changes when designing health interventions such as health promotions and education initiatives for middle-aged women experiencing menopause. Further research is necessary for identifying factors influencing the quality of life of middle-aged women in menopause.

• Journal of Korean Biological Nursing Science
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• v.21 no.1
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• pp.85-97
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• 2019

Purpose: This study was performed to analyze the levels of blood pressure and to identify good or poor blood pressure control (BPC) groups among hypertension patients. The study was based on the Korea National Health and Nutrition Examination Survey (KNHANES VI and VII) conducted from 2013 to 2016. Methods: The sociodemographic and clinical data of 4,151 Korean hypertension patients aged 20-79 years and who were taking antihypertensive medications was extracted from the KNHANES VI and VII database. Descriptive statistics for complex samples and a decision-tree analysis were performed using the SPSS WIN 24.0 program. Results: The mean age was $62.46{\pm}0.21years$. The mean systolic blood pressure (SBP) was $128.07{\pm}0.28mmHg$, and the diastolic blood pressure (DBP) was $76.99{\pm}0.21mmHg$. 71.9% of participants showed normal blood pressure (SBP < 140mmHg and DBP < 90mmHg). From the decisiontrees analysis, the characteristics of participants related to good BPC group were presented with 9 different pathways same as those from the poor BPC group. Good or poor BPC groups were classified according to the patients' characteristics such as age, living status, occupation, education, hypertension diagnosis period, numbers of comorbidity, perceived health status, total cholesterol, high density lipoprotein-cholesterol, alcohol drinking per month, and depressive mood. Total cholesterol level (< 201mg/dL or ${\geq}201mg/dL$ cutoff point) was the most significant predictor of the participants' BPC group. Conclusion: This decision-tree model with the 18 different pathways can form a basis for the screening of hypertension patients with good or poor BPC in either clinical or community settings.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.25 no.2
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• pp.134-145
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• 2018

Purpose: The purpose of this study was to investigate gender related factors that influence regular exercise adherence in patients with coronary artery disease. Methods: This secondary analysis study used data from the 2013~2015 Korea National Health and Nutrition Examination Survey (KNHANES). Three hundred and eighty patients over 20 years of age and having coronary artery disease were selected for this study. Measures included questions about regular exercise, general characteristics, health behaviors, and health status. Data were analyzed using descriptive analysis, Rao-Scott $x^2$ statistic, and multiple logistic regression analysis with the SPSS 21.0 program. Results: The results were as follows. Men did more regular exercise than women (58.8% vs 40.1%). The multivariate-adjusted Odds Ratios (OR) for regular exercise adherence in men were 2.93 (95% CI: 1.39~6.17) for non smokers and 3.06 (95% CI: 1.53~6.13) for men with 0 to 1 comorbidities. Women had a high odds ratios of 0.38 (95% CI: 0.18~0.82) for not using alcohol and 2.10 (95% CI: 1.03~4.29) for no back pain. Conclusion: To improve regular exercise adherence in patients with coronary artery disease, it is necessary to develop different approaches considering gender.

• Korean Journal of Community Nutrition
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• v.29 no.2
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• pp.144-155
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• 2024

Objectives: This study evaluated dietary intake and food sources of essential fatty acids in Korean adolescents. Methods: This study was comprised of 3,932 adolescents (9-18 years) who participated in the 2016-2021 Korea National Health and Nutrition Examination Surveys. Dietary intake and food sources of essential fatty acids, including alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and linoleic acid (LA) were evaluated using data obtained from one-day 24-hour dietary recall. The proportions of adolescents consuming ALA, EPA + DHA, and LA above or below the adequate intake (AI) of the 2020 Dietary Reference Intakes for Koreans were calculated. All statistical analyses accounted for the complex sampling design effect and appropriate sample weights. Results: The mean intakes of ALA, EPA, DHA, and LA among Korean adolescents were 1.29 g/day, 69.6 mg/day, 166.0 mg/day, and 11.1 g/day, respectively. Boys had higher intakes of all essential fatty acids compared to girls. By age group, adolescents aged 15-18 years showed lower intakes of EPA and DHA compared to adolescents in younger age groups. The 9-11-year-old adolescents had lower intakes of ALA and LA than older adolescents. The proportions of adolescents who consumed more than AI were 35.7% for ALA, 30.4% for EPA + DHA, and 41.5% for LA. Adherence to the AI for ALA did not differ by sex or age group, although boys showed a lower adherence to the AI for EPA + DHA than girls. Major food sources for ALA and LA were plant-based oils, mayonnaise, pork, and eggs. Mackerel was the most significant contributor to EPA and DHA intake (EPA, 22.6%; DHA, 22.2%), followed by laver, squid, and anchovy. Conclusions: The proportion of Korean adolescents who consumed EPA + DHA more than AI was low. Our findings highlight that nutrition education emphasizing an intake of essential fatty acids from healthy food sources is needed among Korean adolescents.

• Journal of the Korea Society for Simulation
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• v.29 no.1
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• pp.11-21
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• 2020

Cardio-cerebrovascular diseases (CCD) account for 24% of the causes of death to Koreans and its proportion is the highest except cancer. Currently, the risk of the cardiovascular disease for domestic patients is based on the Framingham risk score (FRS), but accuracy tends to decrease because it is a foreign guideline. Also, it can't score the risk of cerebrovascular disease. CCD is hard to predict, because it is difficult to analyze the features of early symptoms for prevention. Therefore, proper prediction method for Koreans is needed. The purpose of this paper is validating IG-MLP (Information Gain - Multilayer Perceptron) evaluation based feature selection method using CCD data with simulation. The proposed method uses the raw data of the 4^th ~ 7^th of The Korea National Health and Nutrition Examination Survey (KNHANES). To select the important feature of CCD, analysis on the attributes using IG-MLP are processed, finally CCD prediction ANN model using optimize feature set is provided. Proposed method can find important features of CCD prediction of Koreans, and ANN model could predict more accurate CCD for Koreans.

• Korean Journal of Community Nutrition
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• v.19 no.2
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• pp.122-132
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• 2014

Objectives: This study was conducted to investigate the vitamin D status and to determine the association between serum 25-hydroxyvitamin D [25(OH)D] concentrations and consumption frequencies of vitamin D rich foods in Korean adults and older adults. Methods: Subjects were 10,374 adults and 2,792 older adults participating in the 2008-2009 Korea National Health and Nutrition Examination Survey (KNHANES). Consumption frequencies of vitamin D rich foods were estimated by using a qualitative food frequency questionnaire (FFQ). Eleven food items such as beef, egg, mackerel, tuna, yellow corvina, pollack, anchovy, mushroom, milk, yogurt, and ice cream were selected as vitamin D rich foods based on previous research. Results: The proportions of deficiency (< 12 ng/mL), inadequacy (12-20 ng/mL) and sufficiency (${\geq}20ng/mL$) of serum 25(OH)D concentrations from June to November and December to May in adults were 8.8%, 42.3%, 48.8%, and 28.2%, 52.8%, 19.1%, respectively. The proportions of deficiency, inadequacy and sufficiency of serum 25(OH)D concentrations from June to November and December to May in older adults were 10.1%, 32.4%, 57.5%, and 24.1%, 45.4%, 30.5%, respectively. The mean serum 25(OH)D concentrations in adults were positively related to the consumption frequencies of mackerel, anchovy, all fish, milk and milk dairy products. The mean serum 25(OH)D concentrations in older adults were positively related to the consumption frequencies of yellow corvina and negatively related to the consumption frequencies of ice cream. Conclusions: Our results suggest that Korean adults were more deficient in serum 25(OH)D concentrations than older adults. The consumption of vitamin D rich foods may affect vitamin D status in Korean adults. Further studies are required to confirm these findings.

• Journal of Nutrition and Health
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• v.48 no.6
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• pp.496-506
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• 2015

Purpose: The purpose of this study was to estimate dietary flavonoids intake of Korean adolescents. Methods: Using data from the 2007-2012 Korean National Health and Nutrition Examination Survey, a total of 3,957 subjects aged 12-18 were included in this study. We estimated individual daily intake of total flavonoid and six flavonoid classes including flavonols, flavones, flavanones, flavan-3-ols, anthocyanidins, and isoflavones by linking food consumption data with the flavonoids in the commonly consumed food database. The distribution of sociodemographic, health-related, and dietary factors according to flavonoids intake was examined. Results: Average dietary flavonoids intake of the study subjects was 195.6 mg/d in girls, and 189.4 mg/d in boys. The highest flavonoids intake group consumed significantly more fiber, vitamin C, legumes, fruits, and vegetables (p < 0.01) and less fat, grains, meats and dairy foods than other lower consumption groups (p < 0.001). Dietary flavonoid intake showed negative correlation with waist circumference and systolic blood pressure (p < 0.05). Conclusion: This study provided basic data for estimation of flavonoids intake of Korean adolescents. Further research will be required for analysis of the association of flavonoids intake and health-related factors such as cardiovascular risk factors.

• Journal of Korean society of Dental Hygiene
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• v.20 no.3
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• pp.335-346
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• 2020

Objectives: This study investigated the association between oral health and suicide attempts in adults aged 65 years or older using the 7^th Korea National Health and Examination Survey (KHANES, 2016-2018). Methods: Of the total 24,269 participants of the 7^th KHANES (2016-2018), 1,488 adults aged 65 years or older who had an oral health examination were selected. Variations in suicide attempts with demographic characteristics and perceived oral health status were analyzed using the χ² test, and the association between oral health and suicide attempts was analyzed using the logistic regression model. Results: The suicide attempt rate was higher among older adults with chewing (p<0.01) and speaking (p<0.05) difficulties. The odds ratio for a suicide attempt was 1.05 times higher among those with tooth loss (p<0.05). Conclusions: Our results showed that older adults with tooth loss had an increased risk of suicide. Thus, it is important to prevent tooth loss, in the first place, through proper oral health management. If tooth loss occurs, appropriate treatment should be prioritized to facilitate functional recovery. Finally, national support is required for older adults with limited access to dental care.