• 제목/요약/키워드: Cohort analysis

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생애주기에 따른 실직경험 및 구직활동에 관한 비교연구 (A Comparative Cohort Study on the Experiences of Job Loss and Job Seeking in Korea)

  • 양성은
    • 한국생활과학회지
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    • 제21권1호
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    • pp.41-58
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    • 2012
  • The purpose of this study was to compare the job loss and job seeking experiences between middle-aged men and their younger cohort. Participants included 11 middle-aged unemployed men and nine younger unemployed men. The study adopted a phenomenological approach. In-depth individual interviews were carried out and the theme analysis was used to analyze the interview data. The results showed that the two cohorts experienced the macroeconomic crises, the foreign exchange crisis in 1997 and the global financial crisis in 2008, differently. Their experiences affected their attribution of the unemployment and job seeking process. They expressed ambivalence toward their family while dealing with social isolation from extrafamilial support. Most of the participants criticized government employment support policies and services.

Cancer Incidence and Mortality in Osaka, Japan: Future Trends Estimation with an Age-Period-Cohort Model

  • Utada, Mai;Ohno, Yuko;Shimizu, Sachiko;Ito, Yuri;Tsukuma, Hideaki
    • Asian Pacific Journal of Cancer Prevention
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    • 제13권8호
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    • pp.3893-3898
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    • 2012
  • In previous studies we predicted future trends in cancer incidence for each prefecture in order to plan cancer control. Those predictions, however, did not take into account the characteristics of each prefecture. We therefore used the results of age-period-cohort analysis of incidence and mortality data of Osaka, and estimated the incidence and mortality of cancers at all sites and selected sites. The results reflect the characteristics of Osaka, which has and is expected to have large number of patients with liver cancer. We believe our results to be useful for planning and evaluating cancer control activities in Osaka. It would be worthwhile to base the estimation of cancer incidence and mortality in each prefecture on each population-based cancer registry.

사상체질에 따른 대사증후군과 Adiponectin의 상관성 (Association Between Metabolic Syndrome and Adiponectin according to Sasang Constitution)

  • 유준상;고상백;박종구
    • 사상체질의학회지
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    • 제21권3호
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    • pp.122-130
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    • 2009
  • 1. Objectives: The objective of this study is to investigate the relationship between adiponectin and metabolic syndrome according to Sasang Constitution. 2. Methods: Six hundred sixty six participants were included in this cohort study. Sex, age, BMI(Body Mass Index), smoking, drinking, adiponectin level and Metabolic syndrome components were considerd. Sasang constitutional diagnosis was carried out by a sasang constitutional specialist using photos, questionnaires and PSSC(Phonetic System for Sasang Classification). 3. Results: In binary logistic analysis after adjustment of age, sex, BMI, smoking, drinking, adiponectin level and sasang constitution were related with Metabolic syndrome. 4. Conclusions: We suggest that adiponectin and sasang constitution are the important biomarker in Metabolic syndorme.

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Genome-Wide Association Study of Hepatitis in Korean Populations

  • Hong, Youngbok;Oh, Sejong
    • Genomics & Informatics
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    • 제12권4호
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    • pp.203-207
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    • 2014
  • Hepatitis is a common and serious disease for the Korean population. It is caused by a virus, the A and B types of which are plentiful in Koreans. In this study, we tried to find genetic factors for hepatitis through genome-wide association studies. We took 368 cases and 1,500 controls from Anseong and Ansan cohort data. About 300,000 single-nucleotide polymorphisms and 20 epidemiological variables were analyzed. We did not find any meaningful significant single nucleotide polymorphisms, but we confirmed the influence of major epidemiological variables on hepatitis.

Dietary Patterns and Nutrient Intakes of Individuals with Circulatory Diseases: Ansan-Ansung Cohort Data from the Korean Genome and Epidemiology Study

  • Kim, Kyoung Yun;Yun, Jung-Mi
    • 한국식생활문화학회지
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    • 제35권3호
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    • pp.311-322
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    • 2020
  • Recently, there is growing interest in studying the dietary patterns that affect the risk of circulatory system diseases (CSDs). We investigated the relationship between CSDs and dietary patterns through a follow-up study in Korea (2001-2016). The participants of this study were obtained from the Korean Genome and Epidemiology Study (KoGES). This study was a large community-based cohort study (the Ansan-Ansung areas) conducted to assess the effects of various factors, especially diet, on the onset of chronic diseases among the Korean population aged 40-69 yrs. Baseline data were collected from 2001 to 2002, and follow-up studies were performed every 2 yrs, with over 7 follow-up studies performed (2015-2016). Three dietary patterns were identified using factor analysis: "vegetable and seafood (men)/soup and stew (women)" pattern, "sweet foods and breads-rice cake" pattern, and "multigrain rice and cooked white rice" pattern. None of the dietary patterns were significantly associated with the risk of CSDs in either men or women. Our follow-up study is meaningful as it investigated whether the dietary patterns of individuals according to sex affects the development of CSDs.

Socio Demographic and Reproductive Risk Factors for Cervical Cancer - a Large Prospective Cohort Study from Rural India

  • Thulaseedharan, Jissa V.;Malila, Nea;Hakama, Matti;Esmy, Pulikottil O.;Cheriyan, Mary;Swaminathan, Rajaraman;Muwonge, Richard;Sankaranarayanan, Rengaswami
    • Asian Pacific Journal of Cancer Prevention
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    • 제13권6호
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    • pp.2991-2995
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    • 2012
  • Background: India shows some of the highest rates of cervical cancer worldwide, and more than 70% of the population is living in rural villages. Prospective cohort studies to determine the risk factors for cervical cancer are very rare from low and medium resource countries. The aim of this study was to quantify the effect of risk factors related to cervical cancer in a rural setting in South India. Material and methods: Sociodemographic and reproductive potential risk factors for cervical cancer were studied using the data from a cohort of 30,958 women who constituted the unscreened control group in a randomised screening trial in Dindigul district, Tamilnadu, India. The analysis was accomplished with the Cox proportional hazard regression model. Results: Women of increasing age (HR=2.4; 95% CI: 1.6, 3.8 in 50-59 vs 30-39), having many pregnancies (HR=7.1; 1.0, 52 in 4+ vs 0) and no education (HR=0.6; 0.2, 0.7 in high vs none) were found to be at significantly increased risk of cervical cancer. Conclusion: This cohort study gives very strong evidence to say that education is the fundamental factor among the sociodemographic and reproductive determinants of cervical cancer in low resource settings. Public awareness through education and improvements in living standards can play an important role in reducing the high incidence of cervical cancer in India. These findings further stress the importance of formulating public health policies aimed at increasing awareness and implementation of cervical cancer screening programmes.

의과대학 학생과 졸업생 수행능력 평가를 위한 코호트 구축 설계 (Establishment of Cohorts to Evaluate the Performance of Students and Graduates at a Medical School)

  • 오민경;주현정;윤보영;이종태
    • 의학교육논단
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    • 제24권3호
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    • pp.250-260
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    • 2022
  • Evaluating the effectiveness of educational programs involves measuring learning processes as well as outcomes. It is essential to study cohorts of students and graduates to evaluate the long-term effects of educational programs with data generated both during education and after graduation. The purpose of this study was to establish cohorts of students and graduates to evaluate their performance, thereby providing a basis for evaluating the social accountability of medical education. In this study, student and graduate cohorts were built for both students currently enrolled and graduates at Inje University College of Medicine (IUCM). A model involving the process of cohort establishment and an evaluation indicator framework was developed. In the process of cohort establishment, the following steps were conducted: defining the goals and objectives of the student and graduate cohorts, organizing a cohort committee, developing regulations, registering cohorts, acquiring consent, and building a database. A framework of evaluation indicators according to the graduate roles of IUCM was developed by adapting Kirkpatrick's evaluation model. Next, items to be collected in student and graduate cohorts were selected, and the current status of existing data was analyzed. Moreover, a preliminary analysis was conducted, including analyses of the evaluation indicators and graduates' performance. This study suggests that it is necessary to include additional evaluation indicators considering students' learning environment and well-being in student cohorts and to develop strategies or methods for graduates to continue participating in data collection for a long-term study.

아동청소년 성폭력 피해자들을 위한 코호트 연구 : 코호트 구축과 초기 평가 결과 (A Cohort Study of Children and Adolescents Victims with Sexual Abuse in Korea and Their Initial Assessment Results)

  • 김경윤;이나현;천근아;송동호
    • 정신신체의학
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    • 제27권1호
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    • pp.13-24
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    • 2019
  • 연구목적 코호트 연구의 목적은 국내 아동청소년 성폭력 피해자 코호트 시스템 구축과 피해자들의 정신건강에 작용하는 위험요인과 보호요인을 규명하기 위함이며, 이 연구는 코호트 참여자들의 참여 당시 초기 평가 결과를 분석한 예비 결과이다. 방 법 서울 해바라기아동센터를 통해 3년 7개월간 모집한 19세 이하의 65명 아동청소년 성폭력 피해자 및 그 가족들의 인구학적, 성폭력 관련 요인 및 정신심리학적 상태와 정신건강학적 진단을 평가하여 초기자료를 분석하였다. 결 과 초기 평가 자료의 예비 분석 결과는 다음과 같다. 여성 대상자 56명, 대상자 평균나이 12.4세(SD=4.4), 성폭력 추행 71.8%, 친족 및 지인 가해자 87.1% 였고, 피해자의 61.5%가 성폭력 피해와 관련된 정신의학적 진단을 받았으며 이중 외상 후 스트레스 장애가 29.2%, 우울장애가 23.1%로 나타났다. 피해 이후 발고까지 걸린 기간은 평균 1.5년이었다. IES-R-K, TSCYC 외상 후 스트레스장애-회피 항목과 CBCL의 총문제행동 항목이 임상적으로 유의하게 증가한 결과를 나타내었다. 결 론 아동청소년 성폭력 피해자는 정신건강학적 문제가 발생할 위험성이 높은 경향을 가지고 있다. 코호트 연구는 국내 성폭력 피해자들의 정신건강에 영향을 미치는 위험요인과 보호요인을 확인하고 예측모형을 설립할 수 있을 것이다.

사상체질과 경동맥 내중막 두께의 상관성 연구 (Relationship between Intima Media Thickness of Common Carotid Artery and Sasang Constitution)

  • 한동윤;유준상;고상백;박종구
    • 사상체질의학회지
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    • 제23권2호
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    • pp.218-229
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    • 2011
  • 1. Objectives: This study is to investigate the relationship between Intima Media Thickness(IMT) of common carotid artery and Sasang Constitution. 2. Methods: 839 persons, over 40 years old, participated in community-based cohort of Korea Genome and Epiedemiology Study (KOGES) in Wonju City and Pyeongchang City of South Korea from June 2006 to February 2008. The diagnosis of Common carotid Intima Media Thickness was evaluated by B Mode ultrasonography, cardiovascular risk factors were checked using questionnaire and blood samples. Constitution was verified by a Sasang constitution specialist according to the results of PSSC(Phonetic System for Sasang Constitution), facial photos and a simplified Sasang constitutional questionnaire. Multiple regression analysis and logistic regression analysis were performed with SPSS. 3. Results: There were significantly high values in waist circumference, fasting blood sugar, systolic blood pressure, diastolic blood pressure, triglyceride, HOMA-IR and hsCRP in Taeeumin and low in HDL-cholesterol and adiponectin in Taeeumin. There were significantly high value in Common Carotid Intima Media Thickness in Taeeumin. Age was the significant cardiovascular risk factor irrespective of Sasang constitution in all participants. There was a positive correlation between smoking and Soyangin in all participants and men. There were positive correlations between LDL-cholesterol, BMI and Taeeumin in all participants and men. There were positive correlations between hsCRP and Soeumin in all participants and men. There was significantly high odds ratio of Taeeumin over Soeumin in common carotid Intima Media Thickness. 4. Conclusions: Regimens on cardiovascular diseases should be considered according to Sasang constitution. There are more sensitive risk factor in each constitution; smoking in Soyangin, LDL-cholesterol and BMI in Taeeumin, hsCRP in Soeumin.

Association of Alzheimer's Disease with the Risk of Developing Epilepsy: a 10-Year Nationwide Cohort Study

  • Lyou, Hyun Ji;Seo, Kwon-Duk;Lee, Ji Eun;Pak, Hae Yong;Lee, Jun Hong
    • 대한치매학회지
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    • 제17권4호
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    • pp.156-162
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    • 2018
  • Background and Purpose: Previous studies have reported conflicting results about the prevalence of seizures in Alzheimer's disease (AD). There are few epidemiological studies on this topic in Asia. Thus, the objective of this study was to examine demographic and clinical characteristics as well as incidence for seizures in AD patients compared to non-AD patients in a prospective, longitudinal, community-based cohort with a long follow-up. Methods: Data were collected from National Health Insurance Service-National Elderly Cohort (NHIS-elderly) Database to define patients with AD from 2004-2006 using Korean Classification Diseases codes G30 and F00. We performed a 1:5 case-control propensity score matching based on age, sex, and household income. We conducted Cox proportional hazards regression analysis to estimate the risk of epilepsy in AD patients. Results: In the cohort study, patients with AD had higher risk for epilepsy than those without AD, with hazard ratio of 2.773 (95% confidence interval [CI], 2.515-3.057). This study also showed that male gender and comorbidities such as hypertension, hyperlipidemia, diabetes, and chronic kidney disease increased the risk of developing epilepsy. Patients with AD had 1.527 (95% CI, 1.375-1.695) times higher mortality rate than those in the control group. Conclusions: AD patients have significantly higher risk of developing epilepsy than non-AD patients.