• 한국전문물리치료학회지
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• 제28권3호
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• pp.177-185
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• 2021

Background: Muscle undergoes change continuously with aging. Sarcopenia, in which muscle mass decrease with aging, is associated with various diseases, the risk of falling, and the deterioration of quality of life. Obesity and sarcopenia also have a synergy effect on the disease of the older adults. Objects: This study examined the risk factors for sarcopenia, sarcopenic obesity, and sarcopenia without obesity and developed prediction models. Methods: This machine-learning study used the 2008-2011 Korea National Health and Nutrition Examination Surveys in the analysis. After data curation, 5,563 older participants were selected, of whom 1,169 had sarcopenia, 538 had sarcopenic obesity, and 631 had sarcopenia without obesity; the remaining 4,394 were normal. Decision tree and random forest models were used to identify risk factors. Results: The risk factors for sarcopenia chosen by both methods were body mass index (BMI) and duration of moderate physical activity; those for sarcopenic obesity were sex, BMI, and duration of moderate physical activity; and those for sarcopenia without obesity were BMI and sex. The areas under the receiver operating characteristic curves of all prediction models exceeded 0.75. BMI could predict sarcopenia-related disease. Conclusion: Risk factors for sarcopenia-related diseases should be identified and programs for sarcopenia-related disease prevention should be developed. Data-mining research using population data should be conducted to enhance the effectiveness of early treatment for people with sarcopenia-related diseases through predictive models.

• 대한통합의학회지
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• 제11권2호
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• pp.181-196
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• 2023

Purpose : The purpose of this study was to investigate the effects of physical activity on impaired fasting glucose in adults aged 20 years or older. Methods : This study utilized raw data from the 8th National Health and Nutrition Examination survey (2019~2021). The subjects of this study were 5,344 adults aged 20 years or older who were confirmed to be free of diabetes. The control variables in this study model are health behavior characteristics (subjective health status, smoking, drinking), anthropometric characteristics (body mass index), and personal background characteristics (gender, age, income level, education level, marital status). As for the analysis method, the degree of physical activity was made into a dummy variable, and a probit model was used. Results : As a result of this study, compared to quartile 1 of the relative grip strength value obtained by dividing the grip strength by the body mass index (body mass index, kg, m²), fasting blood glucose levels were significantly higher in quartile 2 (.05, p<.01), quartile 3 (.04, p<.01), and quartile 4 (.04, p<.01). It was found that the probability of belonging to the normal category was higher than that of impaired fasting glucose. In addition, in the group of adults aged 20 or older who had a lot of aerobic and anaerobic physical activity, fasting blood sugar was more likely to be in the normal category. Conclusion : Based on the results of this study, it was suggested that diabetes should be managed through physical activity in the pre-diabetic stage, as prevention is important as well as treatment. From a practical point of view, muscle strength, such as grip strength, can be identified as a reliable indicator for identifying impaired fasting glucose.

• 국제물리치료학회지
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• 제9권1호
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• pp.1413-1419
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• 2018

The purpose of this study was to examine the effects of hemispheric damage in body composition of male adults with stroke experiences. The Fourth and Fifth Korea National Health and Nutrition Examination Surveys (KNHANES) with body composition results obtained from the DXA (dual-energy X-ray absorptiometry) assessments were used for this study. Survey data of 18 post-stroke men and 28 healthy controls were obtained. Both the lean and fat masses of the upper and lower limbs were utilized to compare for the compositions between the limbs in post-stroke subjects. In addition, the effect of exercise habit was also observed for the influence of physical activity in body composition. Mixed results in left and right limb compositions were shown between the groups. When the subjects were further divided based on walking days per week, sedentary (walk ${\leq}2d/wk$) post-stroke group showed significantly greater fat mass and less lean mass than the physically active people (walk ${\geq}3d/wk$). In comparison to the healthy sedentary and physically active controls, two post-stroke groups showed greater variations. The results indicate that physical activity maintains or improve the quality of both the upper and lower limb composition in patients with post-stroke men.

• Asian Pacific Journal of Cancer Prevention
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• 제13권5호
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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.

• 대한영양사협회학술지
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• 제15권2호
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• pp.97-112
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• 2009

본 연구는 경남 일부 초등학교 비만아동을 대상으로 식습관, 영양교육에 대한 인식, 영양지식을 조사하여 분석한 자료를 바탕으로 비만아동의 영양교육을 위한 수업지도안을 개발하였다. 그 결과를 요약하면 다음과 같다. 1. 아동의 신체적 특징으로 신장은 남학생과 여학생 간에 유의적인 차이는 없으며 체중은 남학생(55.0${\pm}$9.0 kg)이 여학생(52.0${\pm}$9.4 kg)보다 유의적으로 높았다(p<0.05). 2. 전체 아동의 83.5%가 영양교육을 받아본 경험이 없다고 답하였으며 80.3%가 영양교육의 필요하다고 답하여 영양교육에 대한 관심도가 크다는 것을 알 수 있었다. 3. 희망하는 영양교육 내용에는 '체중 감소를 위한 식사조절법(64.7%)', '올바른 간식(12.2%)'으로 조사되었다. 희망하는 영양교육 방법으로 남학생은 '게임(35.4%)', '강의(18.8%)', '조리실습(16.7)', '개인상담(16.7%)' 순으로, 여학생은 '조리실습(25.6%)', '개인상담(25.6%)', '강의(11.6%)', '그림그리기(11.6%)'로 나타나 유의적인 차이를 보였다(p<0.01). 4. 아동의 식사속도는 남학생이 여학생보다 식사속도가 유의적으로 빠른 결과를 나타내었다(p<0.05). 5. 운동종목에서 남학생이 '가벼운 레포츠활동(27.0%)'과 '구기종목(25.4%)'을 여학생은 '가벼운 레포츠 활동(47.9%)'과 '걷기(25.4%)'를 선호하여 유의적인 차이를 보였다(p<0.001). 운동장소로 남학생이 여학생에 비해 운동장 등 활발한 장소를 선택하여 유의적인 차이를 보였다(p<0.001). 6. 영양교육 수업지도안 개발은 비만 개선을 위한 올바른 식습관과 영양지식을 교육하기 위해 13차시 분량의 수업지도안을 개발하였다. 개발된 초등학교 고학년용 영양교육 교수 학습지도안은 비만 정의 알기, 자신의 모습 사랑하기, 식사와 관련된 감각 익히기, 식품군 알기, 아침결식개선, 편식개선, 올바른 간식선택, 외식의 8개 대주제와 13개의 소주제로 구성된 13차시였다. 본 연구의 수업지도안을 활용하여 실제로 수업하여 그 효과판정을 하지 못했으므로 그에 대한 후속 연구가 이루어져야 하며 비만인구는 점점 증가하고 세계적으로 문제시되고 있지만 이에 대한 교육방법 개발과 실제 교육은 학교에서 거의 이루어지고 있지 않은 실정이다. 앞으로 비만문제를 단순히 가정에 맡기거나 의학적인 문제로 방치하기 보다는 그 예방차원이 우선시되어 아이들의 교육을 담당하고 있는 학교에서 식습관 관련 수업이 영양교사에 의해서 이루어지는 것이 필요하리라 생각된다.

• Tuberculosis and Respiratory Diseases
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• 제80권3호
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• pp.226-229
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• 2017

Chronic obstructive pulmonary disease (COPD) had been considered the only major disease that is continuing to increase in prevalence. There were a few studies about the change of the prevalence of COPD, which showed the prevalence of COPD did not increase. In this review, we report on the trends in the prevalence of COPD in Korea using the data from Korea National Health and Nutrition Examination Survey (KNHANES). The prevalence of COPD in 2015 was 13.4% (male, 21.6%; female, 5.8%). The prevalence of COPD did not change much, which ranged from 13.1% to 14.6% during the period from 2010 to 2015. Among the subjects found to have COPD by spirometry, only 2.8% had been diagnosed as COPD by physicians during the period from 2011 and 2015. In conclusion, the prevalence of COPD did not change significantly during the period from 2010 to 2015. And most COPD patients still had not been diagnosed by physicians and consequently had not been treated appropriately.

• 농촌의학ㆍ지역보건
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• 제39권4호
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• pp.240-255
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• 2014

본 연구는 국민건강영양조사 제5기 골밀도 검진자 남자 2,692명, 여자 3,294명을 최종분석대상으로 골밀도와 그 관련요인을 분석하였으며 주요 결과는 다음과 같다. 단변량 분석에서 골밀도에 유의한 차이를 보인 사회인구학적 특성은 성인 남자와 여자 모두 연령, 교육수준, 경제활동상태, 소득사분위수, 거주지였으며, 건강행위 및 건강관련 특성으로는 남자는 흡연, 음주, 비만, 총근육량, 격렬한 신체활동, 중등도 신체활동, 스트레스 인지율, 체중조절 노력, 수면시간, 여자는 음주, 비만, 총근육량, 격렬한 신체활동, 체중조절 노력, 수면시간이었다. 만성질환 특성에 따라서는 고혈압, 당뇨병, 류머티스관절염은 남녀 모두 질환이 없는 군의 골밀도가 유의하게 높았고, 고콜레스테롤혈증, 골관절염은 여자, 빈혈과 우울증은 남자에서 각각 유의한 차이가 있었으며 모두에서 질환이 없는 군의 골밀도가 높았다. 단변량 분석에서 골밀도에 유의한 차이가 있었던 식품섭취 특성으로는 남자와 여자 모두 단백질 섭취량, 칼슘 섭취량, 인 섭취량, 탄수화물 섭취량 비율, 단백질 섭취량 비율, 지방 섭취량 비율이었으며, 여성건강 특성으로는 경구 피임약 복용여부, 여성호르몬제 복용여부, 임신횟수, 폐경여부, 초경연령, 첫 출산연령이 유의한 차이를 보였다(p<0.05). 다변량 분석 결과에서는 남자의 경우 총근육량이 많을수록, 체질량지수가 높을수록, 연령이 낮을수록, 초졸에 비해 대졸 이상, 허리둘레가 적을수록, 초졸에 비해 고졸, 체중조절 노력을 실천할수록, 중등도 신체활동을 실천하는 경우에 골밀도가 유의하게 높았으며, 성인 여자의 경우 연령이 낮을수록, 총근육량이 많을수록, 폐경 전일수록, 초졸에 비해 고졸, 체질량지수가 높을수록, 초졸에 비해 대졸이상, 중졸, 경제활동을 할수록, 초경 연령이 빠를수록, 여성호르몬제를 복용할수록, 지방 섭취량 비율이 권장량 범위 이상일수록, 체중조절 노력을 할수록, 격렬한 신체활동을 하는 경우의 골밀도가 유의하게 높았다(p<0.05). 이상의 결과 성인 남자에서는 총근육량이, 성인 여자에서는 연령과 총근육량이 가장 중요한 골밀도 관련 요인으로 남녀 모두에서 수정 가능한 가장 중요한 요인은 총근육량이었다. 따라서 골다공증의 사전 예방 및 건강증진을 위해서는 성장기부터 지속적으로 최대 근육량 및 골양을 유지할 수 있도록 조기에 적극적인 교육과 중재를 실시하여야 할 것이다.

• 한국인공지능학회지
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• 제12권2호
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• pp.1-7
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• 2024

In this paper, we compare three models (logistic regression, Random Forest, and XGBoost) for predicting stroke occurrence using data from the Korea National Health and Nutrition Examination Survey (KNHANES). We evaluated these models using various metrics, focusing mainly on recall and F1 score to assess their performance. Initially, the logistic regression model showed a satisfactory recall score among the three models; however, it was excluded from further consideration because it did not meet the F1 score threshold, which was set at a minimum of 0.5. The F1 score is crucial as it considers both precision and recall, providing a balanced measure of a model's accuracy. Among the models that met the criteria, XGBoost showed the highest recall rate and showed excellent performance in stroke prediction. In particular, XGBoost shows strong performance not only in recall, but also in F1 score and AUC, so it should be considered the optimal algorithm for predicting stroke occurrence. This study determines that the performance of XGBoost is optimal in the field of stroke prediction.

• Asian Pacific Journal of Cancer Prevention
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• 제14권3호
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• pp.1773-1780
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• 2013

Background: This study was designed to evaluate prevalence of the metabolic syndrome among cancer survivors compared to non-cancer controls from a population-based sample and to identify associated risk factors. Materials and Methods: Data from the fourth Korean National Health and Nutrition Examination Survey were analyzed to compare the prevalence of metabolic syndrome, as defined by 2009 consensus criteria. Associated factors with were identified using multiple logistic regression analysis among cancer survivors. Results: The prevalence of the metabolic syndrome in cancer survivors (n = 335) was similar to that in the non-cancer population (n = 10,671). However, gastric cancer survivors showed lower risk of metabolic syndrome than non-cancer controls (adjusted odds ratio [aOR] 0.42, 95% confidence interval [CI] 0.20-0.86). Age of more than 60 years (aOR 4.83, 95% CI 1.94-12.03), BMI between 23 and 25 (aOR 6.71, 95% CI 2.90-15.6), BMI more than 25 (aOR 12.23, 95% CI 5.20-28.77) were significantly associated with the metabolic syndrome in cancer survivors. Conclusions: Cancer survivors are unlikely to have a higher risk of the metabolic syndrome than non-cancer controls in Korea. This finding may be due to a relatively high proportion of gastric cancer survivors in Korea than in Western countries. The risk for metabolic syndrome among cancer survivors would appear to vary according to oncological and non-oncological factors.

• 한국전자통신학회논문지
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• 제7권5호
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• pp.1181-1187
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• 2012

노인 우울은 삶의 만족을 저하시킬 뿐 아니라 노인 자살의 중요한 위험요인이다. 본 연구에서는 남자와 여자 노인의 배우자 유무와 우울과의 관련성에 대하여 질병관리본부에서 실시한 4기 2차년도 2008년 국민건강영양조사 대상자중 65세 이상 노인 남자 615명, 여자 904명을 연구대상으로 하였다. 분석은 카이제곱 검정과 다중로지스틱 회귀분석을 통해 일반적 특성, 이환 및 건강관련 특성과 우울과의 관련성을 파악하였다. 연구결과 연령, 가구소득, 주관적 건강상태, 활동제한 유무, 스트레스 정도 등을 보정한 다중로지스틱 회귀분석에서 배우자가 없는 남자 노인의 비차비는 2.37(95% CI 1.03-5.45)로 우울을 더 느꼈으며, 여자노인의 경우에서는 배우자의 유무와 우울과는 관련성이 없었다.