• Journal of dental hygiene science
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• v.9 no.1
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• pp.17-23
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• 2009

A survey using a questionnaire was conducted among industrial employees in Ulsan Total surveyed persons was 244. The purpose of this study was to analysis the relation and behavior of oral health promotion. Also, This study was to provide educational data of oral health. The obtained were analysed by SPSS program 12.0. The findings were as below: 1. Dental visit for prevention Y/N(%) was higher 50 years than 20 years(p < .001). Oral hygiene devices Y/N(%) for oral hygiene showed University graduates higher than Middle school graduates respectively(p < .05). 2. The knowledge of oral health was higher High school graduates than Middle school graduates respectively(p < .05). The rate of brushing teeth 3~5 times per day was higher females than males(p < .01) and better College graduates than Middle school graduates respectively(p < .001). 3. Oral health conditions of respondents were better 20years and 30years than 50years respectively(p < .001). Self-evaluation of Oral health sensitive was better College graduates than Middle school graduates respectively(p < .05). 4. Correlation between of Tooth brushing Frequency per Day by Oral health knowledge, dental clinic Visit, Extraction number had an effect on the significant dental clinic visit for prevention and the knowledge of Oral health had even a positive effect relationship(r = .233, p = .001). The knowledge of Oral health and the frequency of tooth brushing had even a positive effect relationship(r = .161, p = .05). The frequency of tooth brushing and the number of extraction of teeth had a negative effect relationship(r = -.145, p = .05).

• Proceedings of the Korean Society of Crop Science Conference
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• 2017.06a
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• pp.326-326
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• 2017

Climate warming is the issue on the global scale. Soybean can be seriously damaged when high temperature occurs during a reproductive stage such as the flowering and pod-setting period according to the Representative Concentration Pathway (RCP) (2021~2100) 8.5 scenarios. The weather in 2016 was very different from other years (average for 30 years from 1980 to 2010) ; the highest temperature was $33.7^{\circ}C$ which was higher $3.29^{\circ}C$ than average temperature from last 30 years and average rainfall was 26.5 mm, lower 140.9 mm than average rainfalls from other years. Especially, the highest temperature during soybean flow-ering and pod setting stage was $26.8^{\circ}C$ which was higher $0.1^{\circ}C$ and rainfall was 172.2 mm, higher 47.8 mm than other years from the first to the 20th in the October at soybean seed elongation stage. Soybean leaves were turned upside down by the drought stress during the flowering and pod-setting stage. The numbe-r of pods and seeds per unit area decreased 11.0% and 30.3% compared with the previous year, respectively. The ripening period was prolonged by 21 days because of high temperature and soil moisture contents due to the continual rainmade increase of the seed weight up to 15.6% and the yield decreased 7.1% compared to the previous year.

• Journal of Veterinary Clinics
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• v.32 no.3
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• pp.285-287
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• 2015

Wolf teeth have been reported with incidence rate of 13% to 31.9% in horses of both sexes. However, there is no report about the incidence of wolf teeth in pony breeds. In order to determine the incidence of wolf teeth in Jeju Ponies and Jeju Pony crossbreds, oral examination and palpation of the interdental space of ponies at the Jeju Race Park were performed from 2006 to 2010. Results of this study showed that a total of 90 (3.4%) of the 2,675 examined Jeju Ponies and Jeju Pony crossbreds had wolf teeth. Among 30 Jeju Ponies that had wolf teeth, 22 were male (73.3%) and 8 were female (26.7%). Among 60 Jeju Pony crossbreds that had wolf teeth, 25 were male (41.7%) and 35 were female (58.3%). In Jeju Ponies, wolf teeth were most common in 3-years-old, followed by ${\geq}4$-years-old, then 2-years-old. For Jeju Pony crossbreds, wolf teeth were most common in 3-years-old, followed by 2-yearsold, then ${\geq}4$-years-old. In conclusion, the incidence of wolf teeth in Jeju Ponies and Jeju Pony crossbreds was considerably lower than what has been reported for horses in other countries.

• Korean Journal of Environmental Biology
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• v.27 no.1
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• pp.73-81
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• 2009

Population viability analysis of a Gold-spotted pond frog (Rana chosenica) population at Cheongwon-gun, Chungbuk, in South Korea was conducted and we proposed several suggestions for effective conservation and re-introduction of the species. Simulating a developed model over 1,000 times predicted that the population will exist over 30 years with a relatively low growth rate of 0.113, but with a high probability of extinction as 81.1%. Population growth and extinction probability were the most greatly depended on the rate of successful metamorphosis. In the case of outbreak of amphibian diseases such as Chytridiomycosis and Ranavirus, the population will be easily extinct within 4 years with 100% probability. In a habitat of which carrying capacity is 200, to successfully re-introduce an extinct population, it is initially needed to put 100 individuals of which 83% is males and its age structure is normal-distributed. If we additionally conducts artificial supplementation of 10% individuals every 2 years from 4 years to 10 years after initial reintroduction, the population will become a stable with 0.297 growth rate and 0.290 extinction rate. Our results are the first case of amphibian population viability analysis in Korea and could be used to develop effective conservation and re-introduction plans for endangered Gold-spotted pond frog.

• Journal of Society of Preventive Korean Medicine
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• v.27 no.1
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• pp.89-98
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• 2023

Objectives : This study collected sleep information by wearable device in the Korean medicine Daejeon citizen cohort (KDCC). It was measured based on the sleep record information measured by wearing a Fitbit, and the possibility of clinical use was examined for compliance with objective sleep collection. Based on compliance, the possibility of clinical use was examined. Methods : After surveying personal information and PSQI(Pittsburgh Sleep Quality Index), sleep information was collected by Fitbit for 14 days. Compliance was measured based on sleep record information by Fitbit. Compliance was analyzed by sex, age, BMI(Body Mass Index), and sleep group(deep/poor). Results : The number of participants was 730, and the compliance was 94.3%, and the compliance group was 675(92.5%). The age of the participants varied from 30 to 60 years old, and the average age was 46±6.7 years. There were 218 males and 512 females. Young people have high compliance. Males are more compliance than females. As the BMI score decreased in the 30s, the compliance was higher. The underweight group in all age groups had 100 compliance. The underweight group was all female. The low compliance groups were that 30 years males (obesity level2), 50 years females (overweight group), and 50 years females (obesity level2). There was no significant difference in compliance between deep sleep group and poor sleep group. In deep sleep group, females showed higher compliance. In poor sleep group, males showed higher compliance. The average duration of Fitbit usage among participants was 20.1 days. The compliant group wore the device for an average of 21.3 days, while the non-compliant group wore it for only 5.2 days. Of the compliant group, 86.9% (73.8% of all participants) continued to wear the Fitbit after the recommended 14-day period, and 50.8% wore it for more than 20 days. Conclusions : This study showed the possibility of adaptation for wearing a Fitbit for collecting objective sleep information. It is judged that the compliance is high because it was worn for more than 13.2 days out of the 14 days required. It is considered meaningful because the compliance was measured based on the sleep information by Fitbit, not the questionnaire. As the data on objective sleep time is collected automatically, we believe that the burden on participants after the study period is not significant for a certain period. Compliance may be even higher for cohorts related to illnesses and with doctor's orders, rather than for the general population.

• Pediatric Infection and Vaccine
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• v.31 no.1
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• pp.83-93
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• 2024

Purpose: Since the start of the coronavirus disease 2019 (COVID-19) pandemic, various variants of concern have emerged. We divided the representative COVID-19 mutation period into four waves and aimed to analyze the clinical and laboratory features of children with COVID-19 from pre-mutation wave to the middle of omicron wave. Methods: We retrospectively reviewed the medical records of hospitalized patients aged ≤19 years with laboratory confirmed COVID-19. Clinical and laboratory findings during pre-mutation (February 1st 2020 to September 30th 2020), alpha/beta (October 1st 2020 to May 31st 2021), delta (June 1st 2021 to October 31st 2021), and omicron (November 1st 2021 to May 31st 2022) waves were compared. Results: Among total 827 patients, 163 (19.7%) were asymptomatic, and the frequency of fever and cough was 320 (38.7%) and 399 (48.2%), respectively. The proportion of fever ≥38.5℃ was observed to be high during the omicron wave in the age group under 12 years. Lymphopenia was observed highly in the omicron wave in the age group under 12 years, and in the delta wave in the age group older than 12 years. Neutropenia was highly observed in the delta wave in the 0-4 years age group. Conclusions: There were distinct characteristics during all epidemic waves of COVID-19. Children with COVID-19 had more frequent persistent fever during delta wave and children during the omicron wave had a higher peak fever.

• Journal of Yeungnam Medical Science
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• v.4 no.2
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• pp.97-103
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• 1987

Neonatal and obstetrical problems related to the low birth weight infants were evaluated by a retrospective review of the medical records of the 186 low birth weight infants born at Yeungnam-University Hospital during 3 years and 8 months from May 1, 1983 to February 28, 1987. The results were as follows ; 1. The incidence of the low birth weight infants was 4.98% among 3803 live births. 2. Male to female ratio was 1.02:1. 3. The incidence of the low birth weight infants was lowest in mothers of 25 to 29 years, increased in mothers of 19 years of less and 30 to 39 years significantly. 4. There was no difference in the incidence of low birth weight infants between primiparous and multiparous mothers. 5. Common obstetrical complications associated with low weight infants were multiple pregnancy, toxemia and premature rupture of membrane in order of frequency. 6. Common neonatal problems in low birth weight infants were jaundice, idiopathic respiratory, distress syndrome, asphyxia and metabolic dfrangement such as hypocalcemia and hypoglycemia in order of frequency.

• Asian Pacific Journal of Cancer Prevention
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• v.13 no.11
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• pp.5857-5863
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• 2012

Introduction: Mobile phones are in extensive use worldwide and concerns regarding their role in tumor formation were raised. Over the years multiple studies were published in order to investigate this issue using several approaches. The current study looks at secular trends of brain gliomas (low and high grade) incidence and changes in tumor's laterality over 30 years in a population extensively using this technology with a possible correlation to the spread of use of mobile phones. Materials and Methods: All brain gliomas that were diagnosed from 1980-2009 were included and subdivided into two groups - low and high grade. Secular and periodic time trend analyses of incidence rates and changes in laterality were performed. Preferred side of head using mobile phones was assessed with a questionnaire in a sample of adult individuals. Results: A decrease in incidence of low grade giomas (LGG) that correlated with introduction of mobile technology was found from 2.57, 2.34 and 2.79 for every 100,000 in the period 1980 to the end of 1994 to 1.72, 1.82 and 1.57, respectively, over the last three 5-years periods (1995-2009). High-grade glioma incidences increased significantly from 1980-2009 but in the period after mobile phones were introduced (1994-2009) a lower, non significant, rate of increase was observed in males and a lower one (significant) in females. A shift towards left sided tumor location for all adult gliomas combined and separately for LGG and HGG was noted from 1995 onward. The shift was more marked for those who were diagnosed in ages 20-49 (p=0.03). Conclusions: We found a statistically significant decrease in LGG's over 30-years period that correlates with introducing of mobile phones technology and a shift in laterality towards left-sided tumors, the latter occurred in both low and high-grade gliomas.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.19
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• pp.8229-8237
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• 2014

Background: Organized cervical screening has decreased the incidence of cervical cancer. However, screening strategies vary in different countries. Objectives: We performed a systematic review to evaluate the economic aspects of different screening methods. Materials and Methods: We searched databases and then data were abstracted from each study. We evaluated articles based on different types of screening tests as well as screening age and intervals, and using incremental cost effectiveness ratio via calculating quality adjusted life years (QALY), or life years gained (LYG) per cost. We compared the incremental cost-effectiveness ratio (ICER) of each study using GDP per capita. Furthermore, we compared national guidelines with recommendations of cost-effectiveness studies in different countries. Results: A total of 21 articles met our criteria, of which 19 studies showed that HPV DNA testing, 13 suggested an age of 30 years or more, and 10 papers concluded that at least a 5-year or longer interval were the most cost-effective strategies. In some countries, the national guidelines did not match the recommendations of the cost-effectiveness studies. Conclusions: HPV testing, starting at age 30 years or older and repeated at 5-year or longer intervals, is the most cost-effective strategy in any setting. Closer collaboration with health economists is required during guideline development.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.1 no.1
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• pp.73-81
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• 1988

The study was clinically performed in the 65 outpatients with pruritus who visited the Dept. of Dermatology, Oriental Medicial Hospital, Kyung Hee University and oriental medical clinic of Hang Ki Park from Jan. 1985 through Dec. 1986. The results were summarized as follows: 1. Among 65 outpatients, male was 20 ($30.8\%$) and female was 45 ($69.2\%$). In the distribution of age, 10S was $21.5\%,\;and\;20S\;20\%$ at the first visit. 2. In the distribution of season, the peak incidence occured in Spring ($35.4\%$) and next incidence in Winter ($20\%$). 3. In the distribution of duration, $41.5\%$ was between 1 year and 5 years, $20\%$ between 1 month and 6 months, $12.3\%$ between 6 months and 1 year, $9.2\%$ between 5 years and 10 years, $7.7\%$ over 10 years. 4. In regard to the itching lesion, $66.2\%$ showed pruritus throughout the whole body, including partially $15.4\%$ in their heads and faces, $12.3\%$ in their hands and legs, and $6.3\%$ in their shoulders, sides and hips. 5. The most frequently used prescription, was Gosanhomasan (苦蔘胡麻散) which occupied $60.7\%$ of all, in next order of frequency, Gamisamooltang (加味四物湯 $21.4\%$) Gupoongchongkisan (祛風淸肌散 $12.5\%$) and Bangpoongtongsungsan (防風通聖散 $5.4\%$). 6. In regard to the therapeutic duration, $46.2\%$ was showed under 10 days, $18.5\%$ between 10 days and 20 days, and $16.9\%$ between 30 days and 60 days. 7. In the 35 patients, who were confirmed to show apparent result by continual treatment, curative rate was more than $57.6\%$. According to above results, we can confirm that efficacy of therapeutic measures by the oriental medicine on pruritic dermatoses was increased in proportion to therapeutic duration and we feel sure that the therapeutic efficacy can be gradually increased as we expect to make a deep study of the disease and to give correct medical treatment to the nature of the disease.