야뇨증 역학조사 보고: 2개 초등학교 학생 대상

이현정,이강균,김은진,배기수,이상돈,Lee, Hyun Jung,Lee, Kang Gyoon,Kim, Eun Jin,Pai, Ki-Soo,Lee, Sang Don 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.5

목 적 : 초등학생을 대상으로 야뇨증의 유병율 및 야뇨증 관련된 역학조사를 위하여 본 연구를 실시하였다. 방 법 : 경기도 수원지역에 있는 두 초등학교(공립 및 사립학교 각 1개교)에 재학 중인 총 1,514명의 학생들을 대상으로 2006년 12월 한 달간 학생부모 설문조사를 통하여 야뇨증과 관련한 역학조사를 실시하였다. 성별, 연령별, 체격지수, 오줌참기 습관, 가정경제수준 등이 야뇨증 유병율에 미치는 영향을 조사하였다. 결 과 : 전체 1,514명의 학생에게 설문하여 1,063명(70.2%)이 응답하였으며, 응답학생 중 93명(8.7%)에게 야뇨증이 있는 것으로 조사되었다. 학교별 유병율을 보면 공립학교 546명 중 48명(8.8%), 사립학교 517명 중 45명(8.7%)에서 야뇨증이 있었다. 공립과 사립 학교간 월 가정수입 차이는 현격하였으나 이에 따른 유병율 차이는 없었다. 야뇨증의 빈도가 남아에서 8.1%, 여아에서 9.6%로 여아에서 더 높은 경향을 보였으나, 통계적으로 유의한 차이는 없었다. 오줌참기 습관이 있는 학생의 경우 22.1 %로 정상인 학생 5.6%에 비하여 유의하게 야뇨증 빈도가 높았다. 신장 및 체중의 백분위 값은 야뇨증이 있는 학생 군이 정상 학생 군에 비하여 작았으나 통계적으로 유의하지는 않았다. 야뇨증이 있는 93명중 25명(26.9%)만이 야뇨증 치료차 병원을 방문한 적이 있음을 볼 때, 야뇨증치료의 필요에 대한 부모의 인식이 매우 낮음을 알 수 있었다. 연령에 따른 야뇨증 유병율을 살펴보면 연령이 증가할수록 연평균 2.0%씩 유병율이 감소하는 것으로 나타났다. 결 론 : 수원지역 2개교 초등학생을 대상으로 한 조사에서 야뇨증의 평균 유병율은 8.7%였으며, 7세 무렵 12.1%에서 매년 2.0%씩 감소하여 13세까지 거의 소실되는 것으로 보였다. 낮 동안에 배뇨억제 습관이나 가뭄뇨가 있는 아동에서 야뇨증 유병율이 높음을 볼 때, 배뇨조절 교육 및 훈련의 확대가 필요한 것으로 판단된다. Purpose : The purpose of this study was to investigate the prevalence of enuresis in association with voiding habits and socioeconomic status in elementary school children. Methods : A dynamic survey was done of 1,514 students from two elementary schools in Suwon, Korea in December 2006. Data regarding gender, age, height and weight, voiding habits, and monthly family incomes were gathered and analyzed to discover any correlation with the incidence of enuresis. The percentile value of height or weight was extrapolated from the standard population curve. Results : Among 1,514 children, 1,063 (70.2%) answered and returned the questionnaires. Overall, the prevalence of enuresis was 8.7% and there was no difference between the public (8.8%) and private school (8.7%). The family incomes of the students from the two schools differed greatly from each other, but there was no difference in the prevalence of enuresis between the two schools. Children with a habit of void-holding showed a higher prevalence of enuresis. No significant correlation was found between the prevalence of enuresis and the height and weight percentile of children. Experience with hospital visits was low among enuretic children (20.8%), suggesting that Korean parents tend to neglect treatment of enuresis for their children. The prevalence of enuresis decreased by 2.0% each year, as school children aged. Conclusion : The overall prevalence of enuresis among elementary school children in Suwon district was 8.7%. The 12.1% prevalence of enuresis at the seven years came down gradually, to be nil at the age of 13. Infrequent urination or void-holding was assumed to be one of the important factors causing enuresis in elementary school children.

연생연금보험의 장수리스크에 관한 연구

오창수 ( Changsu Ouh ),이현정 ( Hyunjung Lee ) 한국계리학회 2017 계리학연구 Vol.9 No.2

본 연구에서는 미래사망률의 추정에 자주 사용되는 Lee-Carter(LC)모형을 이용하여 미래사망률을 산출하고, 제8회 경험생명표 적용 대비 보험사에서 판매하는 연생형 연금보험에서의 준비금을 기준으로 장수리스크 변화를 비교 분석하였다. 산출결과 주피보험자 40세(남자)일 때 현행 준비금 대비 장수리스크를 고려한 준비금 증가비율(V_LR^LC)이 단생형 7.842%, 연생형 8.358%로 분석되어, 연생형 연금보험에서 장수리스크가 더 큰 것으로 나타났다. 이는 연생형 연금보험에서는 주피보험자 및 종피보험자의 사망률로 산출된 연금이 지급되므로, 주피보험자 및 종피보험자의 사망률 개선영향을 받기 때문이다. 또한, 연생형 연금보험에서는 주피보험자 및 종피보험자의 연령차가 클수록 총 연금지급기간이 길어지기 때문에 장수리스크는 증가하는 반면에, 연금지급 보증기간이 길수록 사망률에 영향을 받지 않는 연금지급기간이 길어 장수리스크는 감소하는 것으로 분석되었다. Longevity risk is the risk the insurance company has to implement cash flow for the future as the mortality has improved under the Solvency Ⅱ. In this paper, the longevity risk is calculated in joint and last survivor annuity product applying the mortality from Lee-Carter model(LCM) comparing from the one from the 8th experience mortality table(EMT). We show estimation parameters of LC model using Korean mortality data from year 2001 to 2015. Longevity risk of joint and last survivor annuity was 8.358% of Best Estimate Liability(BEL) by the 8th experience morality table(EMT) while longevity risk of single life annuity was 7.842% of BEL by the 8th experience morality table(EMT). This is because in joint and last survivor annuity the mortality of both the insured and the second insured affects the payment of annuity. The mortality improvement influences both the insured and the second insured in joint and last survivor life annuity but in the single annuity the morality of the insured is the only factor affected. We also see the change of longevity risk as the discount rate, age, the gap of ages between the insured and the second insured and the different annuity payment guaranteed period so on.

『한국전쟁·II : NARA에서 찾은 6.25 전쟁의 기억(1950-1953)』 미 국립문서기록보관청 사진(NARA. National Archives and Records Adminstration) (박도 엮음, 눈빛, 2010)

이현정,Lee, Hyeon-Jeong 한국기록학회 2010 기록학연구 Vol.0 No.25

소아응급의료센터에 내원한 중독 환자의 입원 결정과 관련 있는 요인 분석

이현정,조영순,장혜영,임훈,황보영,Lee, Hyun Jung,Cho, Youngsoon,Jang, Hye Young,Lim, Hoon,Hwang, Bo Young 대한임상독성학회 2018 대한임상독성학회지 Vol.16 No.1

Purpose: This study was conducted to analyze the factors associated with intoxicated patient's disposition in the pediatric emergency department. Methods: We retrospectively evaluated pediatric intoxicated patients visiting the pediatric emergency department of a hospital between January 1, 2011 and December 31, 2013. Specifically, we analyzed the association between hospitalization recommended rate and the following variables: patient age group, symptoms, intentional poisoning, decontamination and toxic level of substance. Results: We collected data from 345 patients. A high incidence was noted in the 1-4 years of age group and 10-15 years of age group. Unintentional poisoning occurred in 306 patients (88.7%). A total of 115 patients (33.3%) had symptoms when visiting. Forty three patients (12.5%) ingested cleaning substances, which was the most common agent. Potentially-toxic level was the most common level of the substance. The hospitalization recommended rate associated with visits in 2011 was 2.5 times greater than in 2012 and 2013, decontamination was 2.0 times greater than no decontamination, and poisoning with potentially-toxic substances was 2.6 times greater than poisoning with other toxic substances. Additionally, the hospitalization recommended rate associated with symptomatic patients was 2.4 times greater than that of asymptomatic patients and intentional poisoning was 2.4 times greater than unintentional poisoning. Conclusion: Patients with decontamination, ingestion of potentially-toxic substances, symptoms and intentional poisoning had increased hospitalization rates. In addition, the hospitalization rate for patients who visited in 2011 was greater than that of patients who visited in 2012 or 2013.

인천 지역 여자 고등학생의 외모 가꾸기 관심도에 따른 생활습관과 식행동

이현정,김미현,Lee, Hyun-Jung,Kim, Mi-Hyun 한국식품영양학회 2021 韓國食品營養學會誌 Vol.34 No.5

This study aimed to investigate the association between interest in beauty care and dietary behaviors of 581 (analysis rate 96.0%) high school girls in Incheon using a survey done in May 2019. Based on the degree of interest in beauty care, subjects were classified as "Beauty care group (n=346)", and "Non-beauty care group (n=235)". The mean age of the subjects was 16.5 years old. The beauty care group had significantly lower BMI than the non-beauty care group (p<0.01). The beauty care group showed a significantly higher interest in weight control than the non-beauty care group (p<0.001). The most time-consuming preschool morning activity in the beauty care group was beauty care, while that of the non-beauty care group was eating breakfast (p<0.001). The beauty care group had significantly higher frequency of exercise than the non-beauty care group (p<0.05). The number of individuals who skipped breakfast was significantly higher in the beauty care group. In addition, the beauty care group had a significantly higher frequency of taking morning snack, convenience food (p<0.01), sweet snacks (p<0.05), and processed beverages (p<0.05) than the non-beauty care group. Our result findings provide important information on the priority groups for nutrition education based on beauty care interest.

KSTAR 초전도 자석의 운전 안정성에 대한 연구

이현정,오영국,김웅채,박수환,김형찬,김기만,Lee, H.J.,Oh, Y.K.,Kim, W.C.,Park, S.H.,Kim, H.C.,Kim, K. 한국초전도학회 2007 Progress in superconductivity Vol.8 No.2

Since the margins for the minimum quench energy and for the operating current in the superconducting magnet determine the operating regime of the magnet, a thermal stability analysis for the KSTAR superconducting magnet system is performed using 1-D Gandalf code. The result shows that the minimum quench energy is about 500 mJ/cc and the operating current margin is about 70 %. These values are larger than those of the KSTAR design criteria and the KSTAR superconducting magnet system can be operated stably under various experimental environments.

체외수정술에서 난자의 공배양 시점에 따른 배아 발생능력의 비교

이현정,박기상,송해범,이택후,조영래,전상식,Lee, Hyun-Jung,Park, Kee-Sang,Song, Hai-Bum,Lee, Taek-Hoo,Cho, Young-Lae,Chun, Sang-Sik 대한생식의학회 2002 Clinical and Experimental Reproductive Medicine Vol.29 No.1

Objective: To evaluate whether co-culture of oocytes on vero cell monolayers from Day 0 (Day 0 group) after egg retrieval results in an increase in developmental capacity such as fertilization rate, embryo quality, blastulation and clinical pregnancy rate compared with co-culture of oocytes from Day 1 (Day 1 group). Methods: Sperms were treated with Hams F-10 supplemented with 10% human follicular fluid (hFF). Vero cells for co-culture were prepared in TCM-199 with 10% FBS. Oocytes were co-cultured from Day 0 and fertilized oocytes were co-cultured from Day 1 on vero cell monolayers in DMEM with 10% and 20% hFF, respectively after egg retrieval. On day 1, 2 and 5, fertilization rate and grade of embryos and blastocysts were evaluated. Results (fertilization rate, cleavage rate, grade of embryos and blastocysts and pregnancy rate) were considered statistically significant when p value was less than 0.05 using t-test and $x^2$. Results: In sibling oocytes of same cycles, no differences were found in fertilization rate (94.6 vs. 91.4%), cleavage rates (94.6 vs. 91.4%), embryo grade (on day 2 and 3) and blastulation (65.6 vs. 57.0%) and their grade. In different oocytes of different cycles (patients), no differences were found in fertilization (79.8 vs. 78.3%), cleavage rates (77.7 vs. 76.4%) and blastulation (56.0 vs. 45.3%), but pregnancy rate was higher in the Day 0 group than in the Day 1 group (60.0 vs. 42.9%). Conclusions: This study revealed that the embryonic development capacities were not affected by the different co-culture time in the sibling oocytes of same cycles. Although no statistical significance, because of small size of study, there was a trend for higher pregnancy rates in Day 0 group compared to Day 1 group in different oocytes of different cycles.

변증록(辨證錄) 권지십사(卷之十四)에 대(對)한 연구(硏究)

이현정,송지청,정현종,이종환,금경수,Lee, Hyun-Jeong,Song, Ji-Chung,Jeong, Hyun-Jong,Lee, Jong-Hwan,Keum, Kyung-Soo 대한한의정보학회 2011 大韓韓醫情報學會誌 Vol.17 No.1

"Byun Jeung Rok(辨證錄)" written by Jinsatak(陳士鐸) is composed of 14 volumes. In relation to the contents, it is organized into 126 gates(門) and 770 remaining syndromes(餘證) where internal medicine, external medicine, pediatrics, gynecology(內科 外科 小兒 婦人), etc. are divided into sub-sections of cold damage, cold stroke, wind stroke(傷寒 中寒 中風), etc. He explained the symptom, cause of disease, method of treatment, prescription, construction of prescription, instruction of medicine and prognosis(症狀 病因 治法 處方 處方構成 服用法 預後) thoroughly. This study, as an inquiry of the sec 14 volume pediatrics(小兒), deals with febrile fit cacotrophy vomiting diarrhea(驚疳吐瀉), coprozoic parasite(便蟲), smallpox(痘瘡), eruption(疹症), eating mud(喫泥), fetal toxin(胎毒). It was written very logically so it is easy to understand. The analysis of the symptoms are brief and appropriate. Therefore, it is considered to have significant clinical value for future generations and is applied by them. Finally, this topic was studied in hopes of helping later pediatrics clinical treatment.

미국 20-30대 1-2인가구의 주거비 부담 실태

이현정,Lee, Hyun-Jeong 한국주거학회 2012 한국주거학회 논문집 Vol.23 No.2

The purpose of this study was to explore housing cost burden of young single- or two-person households in the United States who have recently moved for job-related reasons. Total 580 households were selected from 2009 American Housing Survey public-use microdata for data analysis. The findings are as follows: (1) Targeted single-person households were characterized as younger households with higher educational attainment, lower household income, and greater proportion of renters, multifamily housing residents and households with housing cost burden than other households; (2) two-person households showed a higher income level and lower housing cost burden; (3) characteristics that showed significant influences on housing cost burden were household size, householder's age, gender, race and educational attainment, household income level and tenure type; and (4) a linear combination of household size, household income, whether or not a low-income household, residency in metropolitan area, and home structural type were found to be most efficient to predict a single- or two-person household's housing cost burden regardless of the household size.

비수도권 출신 예비 사회진출자의 졸업 후 주거 및 경제적 지원에 대한 기대

이현정,Lee, Hyun-Jeong 한국주거학회 2014 한국주거학회 논문집 Vol.25 No.3

The purpose of the study was to explore expectations of workforce entry preparers from non-capital regions on post-college housing and financial support from their parents. From July 26 to August 8, 2013, an on-line questionnaire survey was conducted to juniors and seniors in colleges nationwide and 692 useable responses were collected from college students who were from non-capital regions. Findings from this study are summarized as follows: (1) About 44% of the respondents expected to live apart from their parents and other relatives within two years from their college graduation and 48% of them expected to live in Seoul Metropolitan Area; (2) among those who expected to live apart from their parents and other relatives, 61% expected to be monthly renters; 75% expected to live in small-sized units such as studios; 85% expected parental support to afford post-college housing costs; (3) female respondents, younger respondents and/or respondents with a greater parent income showed more stronger expectation on parental support to afford housing costs; and (4) most respondents perceived influence of housing cost burden strong enough to affect their job choices.