Condom Use and Prevalence of Genital Chlamydia trachomatis Among the Korean Female Sex Workers

Joongyub Lee,Sun-Young Jung,Dong Seok Kwon,Minsoo Jung,Byung-Joo Park 한국역학회 2010 Epidemiology and Health Vol.32 No.-

OBJECTIVES: Since 2004, availability of resources for preventing sexually transmitted diseases in Korean female sex workers (FSWs) has decreased because of strict application of a law against prostitution. This study is to evaluate the condom use and prevalence of Chlamydia trachomatis among FSWs in Korea. METHODS: We performed a cross-sectional study of FSWs from 15 major sex work sites in Korea from June to November 2008, using convenience sampling. Self-administered questionnaires and urine samples were collected after all participants’ written informed consent. Urine samples were analyzed with PCR at a single central laboratory. RESULTS: Among 1,086 FSWs who consented to study participation, data from 999 FSWs were appropriate for analysis. C. trachomatis prevalence was 12.8% (95% CI: 10.7-14.9%). Younger age increased risk for C. trachmatis. Whereas majority of FSWs (71.0%) answered high self confidence in condom negotiation, the proportion of FSWs who always used condoms last month was only 23.7%. However, practicing regular condom use showed significant protection against chlamydia infection, not self confidence in condom negotiation. CONCLUSION: In Korea, FSWs were not practicing enough self-protection at work with a high prevalence of C. trachomatis. Education for constant practice of protection against sexually transmitted diseases is needed, especially for younger FSWs.

Contrast-Induced Nephropathy in Patients Undergoing Intravenous Contrast-Enhanced Computed Tomography in Korea: A Multi-Institutional Study in 101487 Patients

Joongyub Lee,조정연,이학종,정용연,김찬교,박병관,성득제,강병철,정성일,이은주,이범하,박성진,김종철,정대철,성창규,김용수,이영래,김선호,윤성국,박병주,김승협,Korean Society of Urogenital Radiology,Korean Society of Radiology 대한영상의학회 2014 Korean Journal of Radiology Vol.15 No.4

Objective: To evaluate the prevalence of known risk factors for contrast-induced nephropathy (CIN) and their association with the actual occurrence of CIN in patients undergoing intravenous contrast-enhanced computed tomography (CECT) in Korea. Materials and Methods: Patients who underwent CECT in 2008 were identified in the electronic medical records of 16 tertiary hospitals of Korea. Data on demographics, comorbidities, prescriptions and laboratory test results of patients were collected following a standard data extraction protocol. The baseline renal function was assessed using the estimated glomerular filtration rate (eGFR). We identified the prevalence of risk factors along the eGFR strata and evaluated their influence on the incidence of CIN, defined as a 0.5 mg/dL or 25% increase in serum creatinine after CECT. Results: Of 432425 CECT examinations in 272136 patients, 140838 examinations in 101487 patients met the eligibility criteria for analysis. The mean age of the participants was 57.9 ± 15.5 years; 25.1% of the patients were older than 70 years. The prevalence of diabetes mellitus was 11.9%, of hypertension 13.7%, of gout 0.55% and of heart failure was 1.7%. Preventive measures were used in 40238 CECT examinations (28.6%). The prevalence of risk factors and use of preventive measures increased as the renal function became worse. A CIN was occurred after 3103 (2.2%) CECT examinations, revealing a significant association with decreased eGFR, diabetes mellitus, and congestive heart failure after adjustment. Conclusion: Risk factors for CIN are prevalent among the patients undergoing CECT. Preventive measures were seemingly underutilized and a system is needed to improve preventive care.

An Epidemiological Assessment of the Risk of Motor Vehicle Collisions Associated with Benzodiazepine Use in South Korea

Joongyub Lee(이중엽) 대한교통학회 2017 대한교통학회 학술대회지 Vol.77 No.-

Motor vehicle collisions (MVCs) represent a major public health problem that has been associated with the use of benzodiazepines (BZDs) in several studies from Europe, North America, and Australia. Further epidemiological assessment is necessary to establish a similar association in South Korea which has one of the highest rates of fatal MVCs and BZD prescriptions. The present epidemiological study aims to assess the risk of fatal MVCs with BZD exposure among at-fault drivers using a population-specific approach in South Korea. The Korean Traffic Accident Analysis System database (2010-2014) will be linked to the National Health Insurance database (2002-2014) to construct a retrospective cohort comprised of individuals who experienced fatal MVCs. We found higher utilization of BZD among drivers with fatal MVC, and higher ORs for BZD utilization prior to fatal MVCs.

문화산업 발전을 위한 육성방안 연구

이중엽(Lee, Joongyub) 한국디지털디자인협의회 2007 디지털디자인학연구 Vol.7 No.1

문화산업은 고부가가치 산업으로 불리는 발전 가능성이 높은 분야이다. 만화, 애니메이션, 게임, 영화, 방송, 인터넷-모바일 콘텐츠 등이 발전하고 있는 추세로 볼 때 향후 얼마나 거대한 시장으로 확대, 재편될 것인지 충분히 짐작할 수 있다. 고급 인력과 아이디어로 승부가 가능하기 때문에 자연자원이 없는 반면 풍부한 인적자원을 가진 우리나라에 적합하다. 그래서 정부와 기업 및 업체, 대학 및 연구소 등이 상호 유기적으로 연계하고 상호협력을 통해 문화산업을 발전시키는 방안을 마련하는 일은 더욱 시급하다. 본 연구는 우리나라 문화산업의 발전방안을 모색하고자 크게 네 분야로서 첫째, 문헌조사와 제도권에서 규정한 문화산업의 개념과 범위 및 분류를 살펴보고, 둘째, 국내 문화산업의 현황과, 시장규모, 그리고 정책 등을 분석하고, 셋째, 해외 선진국을 중심으로 각 나라들의 문화산업의 현황과, 시장규모, 그리고 정책 등을 분석하여 비교함 으로써, 넷째, 우리의 문화산업 발전을 위한 구체적 실천 방안이 제시된다. Culture industry is one of high value added industries with a great growth of opportunity. As markets of cartoon, animation, game, movie, broadcasting and internet-mobile contents grow, total visual contents market will surely be bigger and changed. Korea doesn"t have enough natural resources extort human resources, so media industry which needs high level of manpower and ideas is well suited to Korea. Therefore, it is essential to organize local government, media contents companies, universities and research institutes and get close cooperation among them. This research is aimed to search for the development of Culture industry in province. Through the analysis of Culture industry in provence and with the help of existing discussions, this paper suggested the proper policies aimed to prepare law data for Culture industry and develop the industry. This paper discussed industry environment and level of understanding of Culture industry based upon the view of decentralization and local reform theory. Also it tried to make a model for the industry development, which links industry, university and government each other and a paradigm for the related organizations.

Developing a national surveillance system for stroke and acute myocardial infarction using claims data in the Republic of Korea: a retrospective study

Kim Tae Jung,Lee Hak Seung,Kim Seong-Eun,Park Jinju,Kim Jun Yup,Lee Ji Yoon,Song Ji Eun,Hong Jin-Hyuk,Lee Joongyub,Chung Joong-Hwa,Kim Hyeon Chang,Shin Dong-Ho,Lee Hae-Young,Kim Bum Joon,Seo Woo-Keun 질병관리청 2024 Osong Public Health and Research Persptectives Vol.15 No.1

Objectives: Limited information is available concerning the epidemiology of stroke and acute myocardial infarction (AMI) in the Republic of Korea. This study aimed to develop a national surveillance system to monitor the incidence of stroke and AMI using national claims data.Methods: We developed and validated identification algorithms for stroke and AMI using claims data. This validation involved a 2-stage stratified sampling method with a review of medical records for sampled cases. The weighted positive predictive value (PPV) and negative predictive value (NPV) were calculated based on the sampling structure and the corresponding sampling rates. Incident cases and the incidence rates of stroke and AMI in the Republic of Korea were estimated by applying the algorithms and weighted PPV and NPV to the 2018 National Health Insurance Service claims data.Results: In total, 2,200 cases (1,086 stroke cases and 1,114 AMI cases) were sampled from the 2018 claims database. The sensitivity and specificity of the algorithms were 94.3% and 88.6% for stroke and 97.9% and 90.1% for AMI, respectively. The estimated number of cases, including recurrent events, was 150,837 for stroke and 40,529 for AMI in 2018. The age- and sex-standardized incidence rate for stroke and AMI was 180.2 and 46.1 cases per 100,000 person-years, respectively, in 2018.Conclusion: This study demonstrates the feasibility of developing a national surveillance system based on claims data and identification algorithms for stroke and AMI to monitor their incidence rates.

Pediatric moyamoya disease: An analysis of 410 consecutive cases

Kim, Seung-Ki,Cho, Byung-Kyu,Phi, Ji Hoon,Lee, Ji Yeoun,Chae, Jong Hee,Kim, Ki Joong,Hwang, Yong-Seung,Kim, In-One,Lee, Dong Soo,Lee, Joongyub,Wang, Kyu-Chang Wiley Subscription Services, Inc., A Wiley Company 2010 Annals of Neurology Vol.68 No.1

<B>Objective</B><P>Moyamoya disease (MMD) is a cerebrovascular occlusive disease of the bilateral internal carotid arteries that causes a compensatory abnormal vascular network at the base of brain. The rare incidence and various surgical techniques applied have limited the clinical research on MMD.</P><B>Methods</B><P>We conducted a retrospective analysis of the surgical outcome of 410 pediatric MMD patients. All patients were treated in a relatively uniform scheme at a single institution. The surgical procedures consisted of bilateral encephaloduroarteriosynangiosis augmented by bifrontal encephalogaleo-/periosteal synangiosis. Logistic regression analyses were applied to reveal the prognostic factors for surgical outcome.</P><B>Results</B><P>The overall clinical outcome was excellent in 66%, good in 15%, fair in 15%, and poor in 4% of the patients. Therefore, 81% of the patients had a favorable clinical outcome (excellent and good). Multivariate analyses revealed that infarction on presentation was associated with unfavorable clinical outcome (odds ratio [OR], 2.85; 95% confidence interval [CI], 1.49–5.46; p < 0.01) and decreased vascular reserve only on single-photon emission computerized tomography (OR, 0.07; 95% CI, 0.01–0.52; p < 0.01), with favorable clinical outcome.</P><B>Interpretation</B><P>Our results indicate that an early diagnosis and active intervention before establishment of irreversible hemodynamic change are essential to achieve a favorable clinical outcome in children with MMD. ANN NEUROL 2010;68:92–101</P>

Risk of lymphadenopathy from SARS-CoV-2 vaccination in Korea: a self-controlled case series analysis

Mi-Sook Kim(Mi-Sook Kim),Bongyoung Kim(Bongyoung Kim),Jeong Pil Choi(Jeong Pil Choi),Nam-Kyong Choi(Nam-Kyong Choi),Jung Yeon Heo(Jung Yeon Heo),Jun Yong Choi(Jun Yong Choi),Joongyub Lee(Joongyub Lee) 한국역학회 2023 Epidemiology and Health Vol.45 No.-

OBJECTIVES: To assess the risk of lymphadenopathy following severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination. METHODS: A self-controlled case series design was used to determine whether the risk of lymphadenopathy was higher in the 1-day to 42-day risk interval after coronavirus disease 2019 (COVID-19) vaccination compared to the control period. In addition, subgroup analyses were conducted according to baseline characteristics, time since vaccination, and sensitivity analyses adjusted for the length of the risk interval. RESULTS: The risk of developing lymphadenopathy in the risk interval (1-42 days) after COVID-19 vaccination compared to the control period was significantly increased, with a relative incidence (RI) of 1.17 (95% confidence interval [CI], 1.17 to 1.18) when the first, second, and third doses were combined. The RI was greater on the day of vaccination (1.47; 95% CI, 1.44 to 1.50). In subgroup analyses by baseline characteristics, a significantly increased risk or trend toward increased risk was observed in most subgroups except for those aged 70 years and older, with a significant increase in risk in younger individuals, those with a Charlson’s comorbidity index <5, and those who received mRNA vaccines (mRNA-1273>BNT162b2). Within the 1-day to 42-day post-dose risk period, the relative risk was highest during the 1-day to 7-day post-dose period (1.59; 95% CI, 1.57 to 1.60) compared to the control period, and then the risk declined. In the sensitivity analysis, we found that the longer the risk window, the smaller the RI. CONCLUSIONS: SARS-CoV-2 vaccination is associated with a statistically significant increase in the risk of lymphadenopathy, and this risk was observed only with mRNA vaccines.

Socioeconomic Disparities in Osteoporosis Prevalence: Different Results in the Overall Korean Adult Population and Single-person Households

Kim, Jungmee,Lee, Joongyub,Shin, Ju-Young,Park, Byung-Joo The Korean Society for Preventive Medicine 2015 Journal of Preventive Medicine and Public Health Vol.48 No.2

Objectives: The present study was conducted in order to examine the association between socioeconomic status (SES) and osteoporosis prevalence in Korea and to assess whether different associations are found in single-person households. Methods: A cross-sectional population-based study was conducted using the Korea National Health and Nutrition Examination Survey, from 2008 to 2011. The study subjects were people aged ${\geq}50$ years with osteoporosis as defined by bone mineral density. Multivariate logistic models were used to estimate prevalence odds ratios (pORs) and 95% confidence intervals (CIs). Gender differences in the likelihood of osteoporosis were analyzed based on household income, education level, and residential area. Results: There were 8221 osteoporosis patients aged ${\geq}50$ years, of whom 927 lived in single-person households. There was a gender-specific association between osteoporosis prevalence and all three SES factors that we analyzed: income, education, and residential area. After adjusting for age, SES, and health behaviors, including body mass index (BMI), low household income was only significantly associated with osteoporosis in men, whereas education level had an inverse relationship with osteoporosis only in women (p=0.01, p<0.001, respectively). However, after controlling for age and BMI, rural residency was only associated with osteoporosis in women living in single-person households (pOR, 1.59; 95% CI, 1.05 to 2.43). Conclusions: The Korean adult population showed a gender-specific relationship between SES and osteoporosis prevalence, with a different pattern found in single-person households.

측면 충돌 상해 경감을 위한 능/수동 복합 안전장치 연구

이동윤(Dongyun Lee),안창섭(Changsup Ahn),신중엽(Joongyub Shin) 한국자동차공학회 2023 한국자동차공학회 부문종합 학술대회 Vol.2023 No.5

The existing restraint system has been developed with passive method. Which is that airbag ECU detect the crash and send the signal to deploy airbag at crash. In addition to the traditional method, this study suggests more effective way to protect occupant by using ADAS sensor data according to ADAS technology improvement. RADAR/LIDAR can detect the distance, speed and direction of the object by measuring reflected wave. Through communication with RADAR/LIDAR, Airbag ECU can deploy side airbag in advance for occupant protection. As the result, the efficiency of airbag and space between occupant and vehicle is increased, occupant protection can be improved with pre-crash activation.

Quality of life in patients with diabetic nephropathy: findings from the KNOW-CKD (Korean Cohort Study for Outcomes in Patients with Chronic Kidney Disease) cohort

Kim Hyunsuk,Lee Joongyub,최광호,정해민,김석형,Gu Jae Eon,Yoo Jeong-Ju,한미연,김효진,성수아,Han Seung Hyeok,김영훈,Yoon Jong-Woo,Heo Jongho,Oh Kook-Hwan 대한신장학회 2022 Kidney Research and Clinical Practice Vol.41 No.1

Background: Diabetic nephropathy (DN) can affect quality of life (QoL) because it requires arduous lifelong management. This study analyzed QoL differences between DN patients and patients with other chronic kidney diseases (CKDs). Methods: The analysis included subjects (n = 1,766) from the KNOW-CKD (Korean Cohort Study for Outcomes in Patients with Chronic Kidney Disease) cohort who completed the Kidney Disease Quality of Life Short Form questionnaire. After implementing propensity score matching (PSM) using factors that affect the QoL of DN patients, QoL differences between DN and non-DN participants were examined. Results: Among all DN patients (n = 390), higher QoL scores were found for taller subjects, and lower scores were found for those who were unemployed or unmarried, received Medical Aid, had lower economic status, had higher platelet counts or alkaline phosphatase levels, or used clopidogrel or insulin. After PSM, the 239 matched DN subjects reported significantly lower patient satisfaction (59.9 vs. 64.5, p = 0.02) and general health (35.3 vs. 39.1, p = 0.04) than the 239 non-DN subjects. Scores decreased in both groups during the 5-year follow-up, and the scores in the work status, sexual function, and role-physical domains were lower among DN patients than non-DN patients, though those differences were not statistically significant. Conclusion: Among the DN subjects, socioeconomic factors were strong risk factors for impaired QoL, as were high platelet counts, high alkaline phosphatase levels, and clopidogrel and insulin use. Clinicians should keep in mind that the QoL of DN patients might decrease in some domains compared with that in patients with other CKDs.