• 대한간학회지
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• 제24권4호
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• pp.392-401
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• 2018

Background/Aims: Leptin is associated with metabolic disorders, which predispose one to non-alcoholic fatty liver disease (NAFLD). The role of leptin in NAFLD pathogenesis is not fully understood. We aim to investigate the association between serum leptin level and severity of NAFLD using U.S. nationally representative data. Methods: Data were obtained from the United States Third National Health and Nutrition Examination Survey. NAFLD was defined by ultrasound detection and severity of hepatic steatosis in the absence of other liver diseases. The severity of hepatic fibrosis was determined by NAFLD fibrosis score (NFS). We used multivariate survey-weighted generalized logistic regression to evaluate the association between leptin level and the degree of NAFLD. We also performed subgroup analyses by body mass index (lean vs. classic NAFLD). Results: Among 4,571 people, 1,610 (35%) had NAFLD. By ultrasound findings, there were 621 people with mild, 664 with moderate, and 325 with severe steatosis. There were 885 people with low NFS (<-1.455, no significant fibrosis), 596 with intermediate NFS, and 129 with high NFS (>0.676, advanced fibrosis). Leptin levels for normal, mild, moderate and severe steatosis were $10.7{\pm}0.3ng/mL$, $12.1{\pm}0.7ng/mL$, $15.6{\pm}0.8ng/mL$, $16{\pm}1.0ng/mL$, respectively (trend P-value<0.001). Leptin levels for low, intermediate, and high NFS were $11.8{\pm}0.5ng/mL$, $15.6{\pm}0.8ng/mL$, $28.5{\pm}3.5ng/mL$, respectively (trend P-value<0.001). This association remained significant even after adjusting for known demographic and metabolic risk factors. In the subgroup analysis, this association was only prominent in classic NAFLD, but not in lean NAFLD. Conclusions: Serum leptin level is associated with the severity of NAFLD, especially in classic NAFLD patients.

• 한국보육지원학회지
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• 제17권3호
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• pp.65-87
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• 2021

Objective: This study aimed to examine the effects of maternal monitoring, shared activities with children, maternal education-oriented behavior, and allowing children to own smart-phones on smart media usage patterns based on smart-phone usage time and purposes among elementary school children. Methods: The participants were 1,315 second-grade elementary school children from the 9th wave of PSKC. Latent profile analysis and the three-step estimation approach were used to examine the determinants of the latent profile and the effects of maternal parenting on the profile. Results: Four latent profiles were identified: 'High-level usage & Entertaining oriented,' 'Moderate-level usage & Social/entertaining oriented,' 'Moderate-level usage & Learning oriented,' and 'Low-level usage.' Additionally, results showed that each profile can be predicted by maternal monitoring, education-oriented behavior, and permitting children to own smart-phones. Conclusion/Implications: Our outcomes suggested that it would be necessary to understand the smart media usage patterns of elementary school children, considering both the amount of time spent with smart media and purposes of uses. Further, it is helpful for mothers to monitor children's daily activities, support their educational activities, and take the role of gatekeeper for smart media as a way of appropriate guidance for their children's use of smart media.

• 지역사회간호학회지
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• 제32권2호
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• pp.195-204
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• 2021

Purpose: This study was to determine how attitude, subjective norm, and perceived behavioral control (PBC) were related to parents' intentions to vaccinate their sons in elementary school against human papillomavirus (HPV), applying the updated theory of planned behavior. Two hypotheses were examined: PBC would moderate the relationship of attitude to intention and subjective norm to intention, respectively. Methods: This was a cross-sectional study with 231 participants recruited in November, 2018. Inclusion criteria for the participants were parents with 5th-6th grade boys in elementary schools. The moderation effects of the hypotheses were analyzed using the PROCESS macro for SPSS. Results: PBC significantly moderated the relationship of attitude to intention on HPV vaccination. The simple effect of attitude to intention was significant under three different levels of the PBC (low, moderate, and high), but the magnitudes of the relationships were not homogeneous. The magnitude of the relationship between attitude and intention was the lowest for the parents with the low level of the PBC. In the relationship of subjective norm to intention on HPV vaccination, the moderating effect of the PBC was not supported. Subjective norm and PBC directly predicted the intention on HPV vaccination. Conclusion: In order to promote the parents' intentions to vaccinate their sons in elementary school against HPV, we need a program that can improve parents' attitude, subjective norm, and PBC, requiring special attention to the parents with the low PBC.

• Human Ecology Research
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• 제60권1호
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• pp.53-68
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• 2022

Using a person-centered approach, the current study investigated latent profiles for the emotional and behavioral problems of students in sixth-grade in elementary school and second grade of middle school. The aim was to explore latent transition patterns and verify the factors affecting the transitions. The participants were 1,937 adolescents who responded to the 3^rd year (6^th grade of elementary school; Time 1), 4^th year (1^st grade of middle school), and 5^th year (2^nd grade of middle school; Time 2) of the Korean Children Youth Panel Study. Latent profile and latent transition analyses were performed. The results were as follows: first, the latent profile of emotional and behavioral problems changed from Time 1 to Time 2. The latent groups at Time 1 were classified into low, moderate, high, and externalizing-dominant, whereas at Time 2, five groups were identified: low, moderate, high, externalizing-dominant, and withdrawal-dominant. Second, transition analyses revealed that although 22.3-57.0% of latent groups remained unchanged, there were significant changes over time between groups, as a new group ('withdrawal-dominant') emerged in Time 2. Third, different factors influenced the latent profile transition of emotional and behavioral problems depending on the transition pattern. Higher levels of self-esteem, better relationships with peers and teachers, and lower levels of parental inconsistency meant emotional and behavioral problems had not worsened at Time 2. The results suggest that early interventions are needed during the transition from childhood to early adolescence.

• 한국의료질향상학회지
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• 제30권1호
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• pp.3-14
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• 2024

Purpose: We conducted this study with the aim of characterizing safety attitudes (SA) among medical staff in a disadvantaged area of Vietnam and examining associated factors with SA. Methods: A cross-sectional survey was conducted on 442 health staff members at four hospitals in Son La Province from June until August 2021. We used the Vietnamese shortened edition of the Safety Attitudes Questionnaire to measure the SA of study participations. We chose latent class analysis (LCA) to identifying the number of latent classes of SA among the study subjects. Multinomial logistic regression was used to examine factors associated with the identified SA classes. Results: The results of our LCA showed that there were three latent classes, namely high SA group (n=150, 33.9%), moderate SA group (n=236, 53.4%), and low SA group (n=56, 12.7%). The multinomial logistic regression analysis found that medical staff who had university education and above, who were nurses, and who served in non-clinical areas were more likely to be in the moderate SA group and in the high SA group than in the low SA group. Conclusion: Based on these results, several recommendations could be made to improve the SA of healthcare workers in disadvantaged areas. Further research with larger sample sizes and more diverse populations is needed to confirm these findings and to develop effective interventions to improve the SA of healthcare workers in disadvantaged areas.

• 한국전문물리치료학회지
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• 제20권2호
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• pp.46-51
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• 2013

The purpose of this study was to investigate the reliability and validity of goniometer measurements of the hallux valgus angle (HVA) compared to radiographic measurements, which are the current standard. Twenty subjects (10 female, 10 male) were recruited for this study (40 feet). The HVA of the subjects was measured using goniometer and radiographic measurement. In three trials, measurements were taken of each subject by two examiners using goniometer and radiographic measurements using radiography in a standing position. The reliability of the measurements was investigated using intraclass correlation coefficients (ICC(3,1)), and the validity was tested using the Pearson product-moment correlation coefficient and an independent t-test. The intra-rater reliability of left and right HVAs were poor (ICC=.409 and .341, respectively). The inter-rater reliability of left and right HVAs were poor and moderate (ICC=.303 and .501, respectively). Left and right HVAs measured using goniometer and radiographic measurements were also poor and moderate (Pearson r=.246 and .544, respectively). These results suggest that goniometer measurements of the HVA are inaccurate and have unacceptable validity compared to radiographic measurements.

• 한국학교ㆍ지역보건교육학회지
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• 제20권3호
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• pp.53-65
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• 2019

Objectives: The purpose of this study is to examine the current status of cancer screening among subjects in the lung cancer screening cycle and to analyze the factors affecting the cancer screening of subjects in the lung cancer screening cycle. Methods: This study used the 'National Health and Nutrition Survey 7th Year (2017)' surveyed nationwide as the main data. The subjects are lung cancer screening projects, the dependent variable is early cancer screening, the independent variables are gender, age, marital status, household income level, education level, national health insurance type, private health insurance, The number of chronic diseases, general health examination, smoking status, drinking status, moderate intensity physical activity, stress perception rate, and weight control efforts were determined. Results: The results of this study showed that factors affecting early cancer screening of lung cancer screening subjects were gender, age, marital status, education level, national health insurance, smoking status, drinking status, moderate physical activity, and weight. Irrespective of the control effort, it was found that the private medical insurance, the number of chronic diseases, the medical examination, and the stress perception rate were affected. Conclusion: If the lung cancer screening subjects recognize the importance of early cancer screening themselves and create a social environment to increase their participation rate, lung cancer screening patients and their families will help them to live a healthy life.

• 한국학교ㆍ지역보건교육학회지
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• 제21권2호
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• pp.27-37
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• 2020

Objectives: The purpose of this study was to investigate health behavior, job stress of police officer in Korea. Methods: It was a descriptive study, and subjects were comprised 135 police officer by reported questionnaires. The data were analyzed by t-test, ANOVA(Sheffe's test), and Pearson's correlation using SPSS/WIN 22.0. Results: The job stress level of the subjects was 41.30 and Dietary practice guideline score was 4.52, moderate activity practice day was 2.48, waling practice day was 3.87. There was a significant difference in the job stress among the characteristics of the subjects according to their work experience and position. Health promoting behaviors and job stress were negatively correlated with dietary practice guideline score and moderate exercise practice days, and positive correlation between smoking and drinking. Conclusion: Based on this study, it is necessary to develop a health program that can reduce the job stress of the subject and solve the job stress healthily.

• 한국지진공학회논문집
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• 제19권5호
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• pp.247-256
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• 2015

This paper briefly introduces the design seismic loads in Korea (KBC 2009). Then, over 10,000 recorded earthquake ground accelerograms, with their magnitude ranging from 4.0 to 8.0 and their epicentral distance ranging from 0 to 200 km, were used to examine the appropriateness of seismic load defined in Korea known as a low-to-moderate seismicity region. The following conclusions are drawn based on the results: (1) The effective peak ground accelerations (EPA) of recorded earthquake accelerograms under $M{\leq}6.0$ and $R{\geq}15km$ appear to be less than that of MCE in Korea for all site conditions defined in KBC 2009. (2) The design spectrum (two-thirds of the intensity of MCE) in KBC 2009 is comparable to those of earthquake records in the magnitude 6 - 7 and the epicentral distance less than 50 km. Therefore, (3) the intensity of Korean design earthquake is considered to be overly high since the Korea peninsula is generally conceived to be a low-seismicity region.

• Journal of Ecology and Environment
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• 제38권1호
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• pp.39-45
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• 2015

In this study, the dependence of local conspecific abundance on seed set and predation was examined, and determinates of population density of the temperate tree species Carpinus laxiflora (Betulaceae) in Inagi city, Tokyo, Japan were identified. During a good seed year (2013), seeds were sampled from 27 individuals and categorized as Sound, Empty, Predated, Immature, Decayed, or Broken. Empty seeds were identified as those that failed to fertilize and predation rates were defined as the proportion of seeds that were affected by predators. The proportion of the seed set that was fertilized was significantly positively correlated with local abundance of conspecific trees, while the proportion of seeds that escaped predation was significantly negatively correlated with local abundance of conspecific trees. Thereby, the production of Sound seeds was highest at sites with moderate local conspecific abundance. Although this phenomenon was only observed in a few cases, it clearly showed optimal reproductive success under conditions of moderate density of conspecific reproductive adults, suggesting a mechanism that controls the population density of this species.