• Nutrition Research and Practice
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• v.5 no.6
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• pp.553-559
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• 2011

The purpose of this study was to define a one-portion size of food frequently consumed by the Koreans aged 65 years or over. From the original 8,631 people who took part in the Forth Korea National Health and Nutrition Examination Survey(KNHANES IV-2) 2008, we analyzed the data on 1,458 persons (16.9%) aged 65 and over, and selected food items consumed based on the intake frequency of 30 or more by all participant. A total of 158 varieties of food items were selected. The portion size of food items was set on the basis of the median amount (50 percentile) in a single intake by a single person. In the cereals category, 13 items were selected, of which the most frequently consumed item was well-polished rice with portion size of 75 g. Among legumes, 7 items were selected, of which the most frequent item was dried black soybean with a portion size of 6 g. Among the 16 groups, the most varied food group (49 items) was vegetables, and among these the most frequently occurring item was garlic (5 g), while among the fruit group, only 11 items were selected, as their intake frequency was low. Fish and shellfish were more frequently consumed by the elderly than meats. The most frequently consumed meat was pork loin, with a portion size of 30 g. In fish and shellfish, the most frequently consumed item was dried and boiled large anchovy with a portion size of 2 g. Portion sizes for food items consumed regularly by the elderly may be conveniently and effectively used in dietary planning and in nutritional education programs, and in assessing the diet intake status of the elderly.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.5
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• pp.1857-1862
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• 2012

To assess the impact of household income and economic recession on participation in CRC screening, we estimated annual participating proportions from 2007 to 2009 for different CRC screening modalities according to household income levels. A total of 8,042 subjects were derived from the fourth Korean National Health and Nutrition Examination Survey (KNHANES IV). Multivariate logistic regression analysis was used to estimate odds ratios and 95% confidence intervals for CRC screening with household income quartiles by gender in each year. People were less likely to attend a high-cost CRC screening such as a sigmoidoscopy or colonoscopy independent of the income quartile during the economic recession. Income disparities for participating in opportunistic cancer screening appear to have existed among both males and females during the three years (2007-2009), but were most distinctive in 2009. An increase in mortality of CRC can therefore be expected due to late detection in periods of economic crisis. Accordingly, the government should expand the coverage of CRC screening to prevent excess deaths by reducing related direct and indirect costs during the economic recession.

• Korean Journal of Health Education and Promotion
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• v.31 no.5
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• pp.97-107
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• 2014

Objectives: The purpose of this study was to examined the association between unemployment and suicidal ideation in Korea. Methods: We analyzed data from the Korean National Health and Nutrition Examination Surveys (KNHANES) IV, conducted in 2009. Statistical analysis methods used in this study were $x^2$-test, Hierarchial logistic regression analysis and other basic statistics using SPSS version 19.0. Results: The suicidal ideation of unemployment workers was 24.7% in male and 35.9% in female. After adjusting for sociodemographic characteristics and health-related characteristics, the risk for suicidal ideation of unemployment workers was significantly higher than employment workers. In men, the OR for suicidal ideation of the employed workers compared with the employed was 2.13, and in women, the OR was 1.31. Conclusions: The findings suggest the impact of unemployment status on suicidal ideation and the need for further prospective investigation that lead to interventions should be required to introduce of suicide prevention program for unemployment worker.

• Journal of the East Asian Society of Dietary Life
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• v.24 no.6
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• pp.710-722
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• 2014

This study investigated factors affecting the bone mineral density (BMD) of Korean adult men. Data on BMD and anthropometric (height, weight, body mass index, BMI, waist circumference, body fat) and biochemical(total cholesterol, vitamin D, alkaline phosphatase, ALP) measurements were obtained from the Fourth and Fifth Korea National Health and Nutrition Examination Surveys (KNHANES, 2008~2011). Overall, BMD of the subjects was decreased from year to year (T-score of 30~39 yr decreased to 0.447 (2010~2011) from 0.106(2008~2009) and in 50~59 yr decreased to 0.234 from 0.033. Age was negatively associated with BMD (T-score 0.361 of 20~29 yr group and -0.894 of ${\geq}80yr$ group in total femoral). According to increase of weight, BMI and waist circumference continuously increased BMD. High value of total cholesterol (T-score 0.157 of 201~<230 mg/dL group and 0.064 of ${\geq}230mg/dL$ group in total femoral) and alkaline phosphatase (T-score 0.337 of ${\leq}102IU/L$ group and -0.270 of ${\geq}336IU/L$ group in total femoral) were associated with lower BMD. Overall height, weight and BMI were positively associated with BMD, and ALP were negatively associated with BMD. Finding of the present study showed that bone loss may be associated with various factors such as age, weight, BMI, total cholesterol, vitamin D and ALP density and that much attention should be paid to bone health of adult men. Therefore, practical and systematic programs are required to improve the BMD of adult men as well as to maintain bone health.

• Journal of the Korean Dietetic Association
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• v.20 no.3
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• pp.157-173
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• 2014

The main purpose of this study was to investigate factors that affect bone mineral density (BMD) in Korean adult women ($20{\sim}80{\leq}yr$). Data on BMD, anthropometric (height, weight, body mass index, waist circumference, and body fat), and biochemical (total cholesterol, vitamin D, and alkaline phosphatase) measurements were obtained from the Fourth and Fifth Korea National Health and Nutrition Examination Surveys (KNHANES, 2008~2011). Overall, the BMD of subjects had decreased from year to year: the T-scores decreased from 0.657 (2008~2009) to 0.295 (2010~2011) in 40~49 yr group and from 0.076 to -0.081 in 50~59 yr group. Age was negatively associated with BMD (T-scores of 0.388 in 20~29 yr group and -1.952 in ${\geq}80yr$ group for total femoral). BMD continuously increased with increased weight and body mass index (BMI). High values of total cholesterol (T-scores of -0.005 in 201~229 mg/dL group and -0.094 in ${\geq}230mg/dL$ group for total femoral) and alkaline phosphatase (T-scores of 0.481 in ${\geq}102IU/L$ group and -0.674 in ${\geq}336IU/L$ group for total femoral) were associated with lower BMD. Overall height, weight, and BMI were positively associated with BMD, whereas total cholesterol and alkaline phosphatase (ALP) were negatively associated with BMD. Findings of the present study show that bone loss may be associated with various factors such as age, weight, BMI, total cholesterol, and ALP et al., and that much attention should be paid to bone health of adult women. Therefore, practical and systematic programs are required to improve the BMD of adult women as well as to maintain healthy bone levels.

• Journal of Korean society of Dental Hygiene
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• v.21 no.6
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• pp.721-729
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• 2021

Objectives: This study aimed to examine the actual use of interdental care products (ICPs), such as dental floss (DF) and interdental brushes (IDB), among Korean youth, confirm their relevance to periodontal health, and determine the factors that influence the use of each product. Methods: This study included 15,912 young adults aged 19-39 years and data from the Korea National Health and Nutrition Examination Survey (KNHANES) (2007-2018). The usage rate of ICPs according to the characteristics of the subjects for each cycle of KNHANES was presented. Multivariable logistic regression analysis was performed to identify factors affecting the use of ICP. Results: The use rates of DF and IDB gradually increased until the 7th period, reaching 34.8% and 26.8%, respectively. The rate of using more than one ICP also showed a tendency to gradually increase from 25.2% in the 4th period to 50.0% in the 7th period. The use of interdental care products is related to gingivitis and periodontitis. Factors related to the use of ICP were gender, age, education level, frequency of brushing, and dental examination experience. Conclusions: The use of dental floss or interdental toothbrushes was related to periodontal health, but only half of the adults aged 19-39 years used ICP. Therefore, oral health experts should actively encourage the use of DF and IDB in young adults.

• Journal of Nutrition and Health
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• v.46 no.2
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• pp.186-196
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• 2013

The objective of this study was to develop a semi-quantitative food frequency questionnaire (FFQ) for an adult population for use in the Korea National Health and Nutrition Examination Survey (KNHANES). The 24-hour recall data for 2,939 subjects aged 19 years and over from the fourth KNHANES first year (2007) were used to extract the items included in the questionnaire. The FFQ items were developed by selection of major dishes based on the cumulative contribution rate, between-person variability based on the cumulative R2 of energy and 14 nutrients (carbohydrate, protein, fat, crude fiber, calcium, phosphorous, iron, sodium, potassium, vitamin A, thiamin, riboflavin, niacin, and vitamin C) and the number of consumers of each dish. In addition, the FFQ items were revised with analysis of 24-hour recall data of the fourth KNHANES second and third year (2008, 2009). Finally, 112 items were included in the FFQ and grouped as follows: rice (5 items), noodles and dumplings (6), breads and rice cakes (8), soups and stews (12), soybeans, eggs, meat and fish (23), vegetables, seaweed and potatoes (27), milk and dairy products (4), fruits (13), beverages (5), snacks (6) and alcoholic beverages (3). The food items of FFQ accounted for an average of 87.0% of energy and 14 nutrient intakes and also accounted for 81.7% of the between-person variability. The frequency range of the FFQ items was classified into nine categories (never or seldom, once per month, 2-3 times per month, once per week, 2-4 times per week, 5-6 times per week, once per day, twice per day and three times per day) and the portion size was divided into three categories (small, medium and large). We expect that this developed dish-based FFQ could be used in assessment of longterm dietary intakes of Korean adults.

• The Journal of the Korean dental association
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• v.51 no.9
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• pp.511-517
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• 2013

To assess the association between oral health and general health, this study examined the relationship between chewing difficulty and twelve chronic health conditions such as hypertension, hyperlipidemia, diabetes, cerebro- and cardiovascular disease, musculoskeletal disease, respiratory disease, eye/nose/throat disease, stomach/intestinal ulcer, renal dysfunction, thyroid disease, depression, and cancer in Korea. The study population was 3,066 elders aged 65 years old and more from the fourth Korean National Health and Nutrition Examination Survey. Chewing difficulty was measured on a 5-point Likert scale. Chronic conditions were assessed by self-reported questionnaire. Confounders were age, gender, education, income, smoking, drinking, and obesity. Chi-square test, general linear model, and multiple logistic regression model were done with complex sampling design. Musculoskeletal disease (adjusted odds ratio=1.33), respiratory disease (adjusted odds ratio=1.52), and cancer (adjusted odds ratio=1.58) were independently associated with chewing difficulty. Multiple chronic conditions with more than 4 chronic disease showed significant association with chewing difficulty (adjusted odds ratio=1.37).

• Research in Community and Public Health Nursing
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• v.23 no.4
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• pp.358-365
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• 2012

Purpose: The purpose of this study was to investigate factors associated with the intention to quit smoking in community-dwelling elderly smokers. Methods: From the database of the Fourth Korean National Health and Nutrition Examination Survey (KNHANES-IV), the researchers selected 448 elderly smokers over the age of 65. Data were analyzed with the $x^2$ test and multiple logistic regression using the SPSS/WIN 18.0 program. Results: Of the respondents, 45.5% intended to quit. The factors associated with the intention to quit were relative youth, having limit of activity day living and having past attempts to quit. Conclusion: Population-based smoking cessation programs, especially those targeted at the elderly, should take these predictors into consideration in the design of interventions.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.6
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• pp.789-807
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• 2011

The purpose of this study was to examine the association between fatty acid intake and dyslipidemia in Korean adults, using data from the Korean National Health and Nutrition Examination Survey (KNHANES)I, II, III, and IV. After excluding subjects who had missing data for the dietary intakes, anthropometric measurments and laboratory tests, a total of 15,804 subjects aged 20~64 y (6,838 men and 8,966 women) from KNHANES 1998~2007 were included. All data were analyzed using SPSS Statistics software (version 18.0). Associations between fatty acid intakes and dyslipidemia were analyzed by logistic regression analysis after adjusting for age, BMI, energy intake, marital status, job, education level, alcohol intake, and smoking status. Fatty acid intakes were significantly higher in men than in women. The risk of hypertriglyceridemia was significantly and negatively associated with intakes of TFA, SFA, MUFA, PUFA, EPA, DHA, n-3 PUFA, and n-6 PUFA in both men and women. The risk of hypercholesterolemia was not significantly associated with any fatty acid intakes in either sex. The risk of high LDL cholesterolaemia was significantly and positively associated with intakes of TFA, MUFA, PUFA, LNA, n-3 PUFA, and n-6 PUFA in men however, there was no significant association with any fatty acids in women. The risk of low HDL cholesterolaemia was significantly and positively associated with intakes of TFA, MUFA, PUFA, LNA, n-3 PUFA, and n-6 PUFA in men, and was significantly and negatively associated with intakes of MUFA, PUFA, LNA, and n-3 PUFA in women. These results show that dyslipidemia is significantly associated with individual intake of fatty acids, suggesting that fatty acid type may be related to the risk of dyslipidemia.