• Journal of Nutrition and Health
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• v.30 no.7
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• pp.832-839
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• 1997

The purpose of this study is to survey the prevalence of obesity assessed on the basis of height and weight among students in primary and secondary schools in the metropolitan area of Seoul, Korea during the period of 1979 to 1996. The major findings are as follows ; 1) The fiftieth percentile values of BMI have increased more in mid-ranged age group than upper(16-17 years old) and lower(6-7 years old) ranged age groups. 2) The prevalence of obesity by standard weight of height was higher among male students than female students and students in the primary schools showed higher weight increase than adolescent age(12-17 years old) group. As a whole, the prevalence of obesity over last 18 years has increased 4.6 times in males and 3.2 times in females. 3) Judged on the basis of the BMI 90th, 95th percentile values of 1979 , the prevalence of obesity among male students showed higher increases than among female students. Higher increase was also observed among primary school students than among middle and high school students. Increase of weight was higher for the $\geq$95th percentile group than the 90-95th percentile group. 4) Judged on the basis of the BMI, 90th, 95 th percentile values of NHANES-I, the $\geq$95th percentile group showed higher increase in the prevalence of obesity than the 90-95th percentile group. According to the 1996 data, severe obesity group ($\geq$95th percentile) was about two times of NHANES-I in male primary school students, while the number for female middle and high school students was about 1/5 of NHANES-I.

• Journal of The Korean Association For Science Education
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• v.19 no.4
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• pp.585-594
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• 1999

The purpose of this study is to examine the concept of Greenhouse Effect as understood by middle school high school university students using a closed-form questionnaire. Based on results of the questionnaire which was administered to 619, the extent to which alternative concepts were held was quantified and compared the difference of various group based on grade level. gender, text and major. Also, subjects were divided into two groups, one is middle school students and the other is high school university students and common themes within conceptual framework of each group were identified by factor analysis. The result showed that students confused Greenhouse Effect with ozone layer depletion in stratosphere and linked familiar contamination around everyday life. acid rain. radioactive contamination, nuclear arsenal to Greenhouse Effect. These trends were more appreciable in female than male, biology major than any other major and text did not make any significant difference. In addition, the result of factor analysis showed that two groups linked familiar contamination around everyday life to Greenhouse Effect and high school university students understand the consequences of an increase in the Greenhouse Effect more systematically than middle school student, perceived the relation between the origin of an increase in the Greenhouse Effect and human activity but confused Greenhouse Effect with ozone layer depletion in stratosphere.

• Journal of Korean society of Dental Hygiene
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• v.8 no.4
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• pp.165-180
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• 2008

The present study is a descriptive survey on factors affecting middle school students' oral health belief and oral health practice. In order to find methods for forming right beliefs and inducing desirable behavioral patterns, we conducted a questionnaire survey with 470 students at two middle schools in Cheongju and drew conclusions as follows. Of the 470 questionnaires, 457 were recovered. With 10 inappropriately answered ones excluded, 446 questionnaires were analyzed. 1. As to oral health belief according to general characteristics, susceptibility was 2.63 points (p=0.035) in male students, 2.68 (p=0.016) in 3rd year students, and 2.92 (p=0.002) in only child students. Seriousness was 2.57 (p=0.017) in male students, 2.67 (p=0.001) in 3rd?year students, and 2.92 (p=0.001) in only child students. barrier was 2.62 (p=0.009) in 3rd year students, and 2.95 (p=0.002) in only child students. Benefit was 3.40 (p=0.011) in female students, and 3.43 (p=0.003) in 1st year students. salience was 3.21 (p=0.006) in female students, and 3.24 (p=0.009) in 1st year students. 2. As to oral health belief according to oral?health?related factors, susceptibility and seriousness were 2.69 (p=0.003) and 2.72 (p=0.000), respectively, in the lower?middle class group, 2.83 (p=0.001) and 2.80 (p=0.003), respectively, in the drink taking group, and 2.80 (p=0.000) and 2.75 (p=0.000), respectively, in the low conversation group. barrier was 2.63 (p=0.018) in the lower?middle class group, 2.67 (p=0.021) in the low conversation group, and 2.77 (p=0.000) in the group fearing the visit to the dental clinic. Benefit was 3.36 (p=0.000) in the high conversation group, and 3.37 (p=0.0l5) in the group visiting the dental clinic for prevention. salience was 3.26 for beverage and 3.20 (p=0.003) for fruit and vegetable. 3. As to oral health practice according to general characteristics, the score of oral health practice was 3.21 (p=0.000) in female students, 3.30 (p=0.000) in those aged 12 or below, and 3.27 (p=0.000) in 1st?year students. 4. As to oral health practice according to factors related to oral health, the point was 3.17 (p=0.002) in the middle upper class group, 3.24 (p=0.001) in the group eating mainly fruit or vegetable, and 3.18 (p=0.030) in those with experience in education. 5. Oral health practice was in a negative correlation with susceptibility (r=-0.143), and in a positive correlation with benefit (r=0.229) and salience (r=0.286).

• Korean journal of food and cookery science
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• v.25 no.2
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• pp.189-198
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• 2009

This study was conducted to analyse middle school students' perceptions of seafood as well as their eating experiences and favorite cooking methods for seafood. It also examined the frequency and use of seafood on school lunch menus. Questionnaires were distributed to 739 students in 5 middle schools in the Busan area. On a scale of 5.00, the average scores for perceptions toward seafood were as follows: 3.67 for health & nutrition, 3.53 for taste, 2.53 for smell, 2.77 for convenience. The male students had significantly_(p<0.05) higher perception scores for health & nutrition, taste, and smell than the female students. Among 38 types of seafoods, the highest percentages for eating experiences included seaweed_(99.2%), anchovies_(99.1%), fried fish paste_(98.6%), shrimp_(98.4%), crab_(98.2%), squid_(97.9%), sea mustard_(97.8%), mackerel_(97.7%), dried squid_(97.3%), and hair tail_(96.9%). However, the majority of students had eaten a limited amount of seafood. The degree of seafood intake at home was significantly_(p<0.01) higher than at school. The students' favorite cooking methods for seafood were in the order of grilling, stir-frying, steaming, deep-fat frying, and soup. However, the middle school lunch programs primarily served as soup, seasoning, stir-fried, braised, deep-fat fried, and grilled, respectively. The main reasons for leaving seafood on a plate were inconvenience due to the fishbones_(62.7%), tasteless_(45.4%), and disliking the smell_(35.7%). Improvements that students wanted for seafood on school lunch menus included removal of fishbone for convenience_(67.0%), taste_(52.0), and increased variety of seafood types_(38.2%).

• The Korean Journal of Community Living Science
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• v.18 no.1
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• pp.63-70
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• 2007

The purpose of this study is to find out how family, school and community variables influence internet behavior problems in adolescents. By focusing on sex differences, this study analyzes female as well as male behavior problems. The data used in this study are gathered from 1,046 middle and high school students in a national sampling. The results are as follows. Internet addiction is the most frequently occurring problem. A chi-square test shows that male students have higher experience rates than female students in obscene chatting and violent games. A series of logistic regressions are performed to blow the relative influence of independent variables controlling for each other. In the case of male students' internet behavior problems, region, communications with their parents, interactions with their close friends, and satisfaction with community facilities are significant variables. Interactions with friends are significant in predicting behavior problems of both female and male students. Suggestions and implications with regard to intervention strategies for adolescents are discussed.

• Journal of The Korean Association For Science Education
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• v.32 no.9
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• pp.1391-1404
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• 2012

This study was conducted for the purpose of analyzing the teachers' and students' preferences and reality with regard to their interaction in secondary school science classes. The subjects of this study were 180 teachers and 1,389 students. The contents of the questionnaire for the teachers included the quality of the personal relationships between the teachers and students as well as the teachers' recognition of teaching activities, and the questionnaire for the students dealt with the quality of the personal relationships between the teachers and students as well as the students' perceptions of their classes. The questionnaire responses were divided into preferences and reality for the research. The results are as follows. First, the levels of the teachers' and students' perceptions of their interaction were significantly lower (p<0.05) compared to their preferences with regard to such. Second, the female teachers showed higher levels of preferences and reality compared to the male teachers in the case of the teacher variables, and the middle school teachers showed higher levels of preferences and reality compared to the high school teachers. Third, the male students showed a higher perception level compared to the female students, and both the preferences and reality levels of the middle school students were significantly higher (p<0.05) than those of the high school students. In addition, the level of interaction was lower in big cities than in small cities. Fourth, there was a significant difference between the levels of the teachers' and students' preferences and reality with regard to their interaction.

• Journal of The Korean Association For Science Education
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• v.14 no.2
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• pp.225-235
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• 1994

Concidering environmental education as an ultimate resolution for environmental problems, we conducted a study focusing on affective matters. An instrument was developed to evaluate attitudes of elementary and middle school students toward environmental problems. To develop a reliable Likert-type evaluation instrument scale with which emotional intensity could be judged, mean, standard deviation, response frequency distribution, discrimination index, reliability were calculated. As a result, 21 statements for recognition level and 14 statements for behavioral level were made(The Cronbach alpha coefficient of the instrument was .786). This instrument was used to evaluate 5th and 6th grade elementary school students and 1st and 2nd grade middle school students(total number of subjects was 980). The result of this survey can be summarized as follows. 1. Students recognized the seriousness of environmental problems but they did not behave in such a manner as to prevent it. 2. As a result of t-test, behavioral level score of elemenatary school students was significantly higher than that of middle school students(p<.001). 3. This study showed that there was a significant correlation between the recognition level score and the behavioral level score(r=.386, p<.001). 4. Two-Way ANOVA was used to analyze that there was any significant difference according to grade and sex. The results were as follows. (1) No significant difference was found in total score. (2) On recognition level, female students' score was signigicantly higher than that of male students(p<.01). (3) On behavioral level, higher-grade students' score was lower than that of lower-grade-students (p<.001).

• The Korean Journal of Health Service Management
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• v.8 no.1
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• pp.165-173
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• 2014

The objective of this study was to examine possible causes of fear of dental treatment in middle school students. The subjects were a total of 347 students who were selected by convenience sampling from among the students of the middle schools located in Cheongju, Korea. They were administered a self report survey. The results showed that overall dental fear was higher among female students than male students. With respect to associative dental fears, they felt fear the most when they waited sitting on the dental chair. In fears of specific dental stimuli, needles were the most fearful stimulus. In the areas of fears of specific dental stimuli and overall dental fear, the subjects with indirect pain experiences felt fear more. There exists a need to develop dental health care programs that will help to manage and decrease fear of dental treatment.

• Journal of the Korean Society of School Health
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• v.16 no.1
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• pp.105-119
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• 2003

The purpose of this study was to surveyed the smoking status and pattern, nicotine dependence and factors associated with smoking and nicotine dependence for high school students in Daegu. In March. 2000, 1,593 students from 7 male and 6 female high schools located in Taegu were assessed with self-completing questionnaire. The major findings were as follows; Percentage of male smokers was 15.0% in general high school, 30.9% in business high school and that of female smokers was 5.0% in whole woman's high school. The median score of FTQ was 4.0 among male smokers and female smokers. the mean of FTQ score was $4.07{\pm}1.96$ in male and $3.94{\pm}1.63$ in female. Percentage of students with high FTQ score(FTQ$\geq$7) was 13.3% in male and 5.9% in female. In multiple logistic regression analysis, smoking had significant association with general characteristics such as personal-specifics factors, family environment factors and school environment factors. In multiple logistic regression analysis, nicotine dependence had significant association with school-age and duration of smoking On consideration of above findings, to prevent students from smoking and to reduce the smoking rate, we have to try together in house, school and society.

• Health Policy and Management
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• v.20 no.2
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• pp.89-103
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• 2010

Purpose : This study is descriptive research that confirms regularity of breakfast and related factor. Methods : The duration for investigation took place from April to May 2007 and 550 middle students of 6 middle school who lived in G city participated in investigation. The contents of the questionnaire consist of general trait, diet trait, life pattern and health state. Results : The significant variables of regularity of breakfast habit have some gender differences. For male students, recognition of importance of the breakfast, breakfast preparer, spare time before attendance and one's parents' breakfast habit are significant variables. On the other hand, for female students, recognition of importance of the breakfast, breakfast preparer and an income level are significant variables(p<.05). For male students, the cross ratio has 3.52 for recognition of importance of breakfast, 2.72 for one's parents' breakfast habit, 2.05 and 3.13 when one's mother prepare breakfast. For female students, the cross ratio is 3.24 score when one's mother prepare breakfast. Conclusion : The regularity of breakfast habits is related to recognition of importance of breakfast, mother's breakfast preparation and his or her parents'breakfast habit. It is necessary to propose the importance of breakfast to improve the regularity of breakfast habit and concern of parents for breakfast.