• The Korean Journal of Applied Statistics
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• v.21 no.6
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• pp.933-945
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• 2008

The genetic association test on age of onset trait aims to detect the putative gene by means of linear rank tests for a significant trend of onset distributions with genotypes. However, due to the selective sampling of recruiting subjects with ages less than a pre-specified limit, the genotype groups are subject to substantially different censored distributions and thus this is one reason for the low efficiencies in the linear rank tests. In testing the equality of two survival distributions, log-rank statistic is preferred to the Wilcoxon statistic, when censored observations are nonignorable. Therefore, for more then two groups, we propose a generalized log-rank test for trend as a genetic association test. Monte Carlo studies are conducted to investigate the performances of the test statistics examined in this paper.

• The Monthly Diabetes
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• s.192
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• pp.8-11
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• 2005

인슐린 주사가 반드시 필요한 당뇨병으로 소아연령으로 소아연령에서 발병되는 당뇨병의 대다수는 제1형 당뇨병이다. 자가 면역기능에 의해 인슈린을 생성하는 췌장의 도세포가 파괴되어 발병하고 대부분자가 항체가 나타나고 일부는 자가 항체가 발견되지 않는 경우도 있으며 소수에서는 초기에 인슐린의 비의존형의 양상을 보이다가 점차 인슐린 의존형으로 나타나는 경우도 있다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.16 no.2
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• pp.219-230
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• 2005

Objectives : This study was designed to compare the demographic data, clinical characteristics, developmental delay, and psychological tests between childhood-onset and adolescent-onset schizophrenic in-patients. Methods Medical records of the 17 childhood-onset (very early onset) Schizophrenia and 16 adolescent-onset (early onset) Schizophrenia in-patients were reviewed. Sex, age, psychiatric past history, prodromal symptoms and period, subtype, co-morbid disease, developmental delay, prescribed drug and dosage, treatment response, intelligence quotient (IQ), and Rorschach test were evaluated. Results : The mean admission age of childhood-onset (very early onset) group and adolescent-onset (early onset) group were 12.69$({\pm}2.34)$ and 15.13$({\pm}1.04)$ years. The mean onset age of childhood-onset(very early onset) group and adolescent-onset (early onset) group were 10.79$({\pm}1.95)$ and 14.46$({\pm}0.82)$ years. The mean prodromal period of childhood-onset (very early onset) group and adolescent-onset (early onset) group were 15.94$({\pm}12.33)$ and 8.06$({\pm}6.10)$ month. The time to remission period of childhood-onset (very early onset) group and adolescent-onset (early onset) group were 50.58$({\pm}24.67)$ and 30.06$({\pm}18.04)$ days. Longer time to remission period in childhood-osnet (very early onset) group was associated with earlier age of onset. The mean of total IQ, performance IQ, verbal IQ were at an average level. Discussion : Childhood-onset (very early onset) group and adolescent-onset (early onset) group Schizophrenia had different clinical and psychological features including prodromal period, and IQ subtests.

• The Korean journal of helicobacter and upper gastrointestinal research
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• v.18 no.3
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• pp.215-216
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• 2018

위암의 발병률이 감소하고 있기는 하지만 전 세계적으로 여전히 연 100만 명 이상이 새롭게 위암으로 진단되고 있으며, 앞으로 향후 몇십 년 동안은 인구의 고령화로 인하여 위암에 대한 사회적 경제적 부담이 줄어들지 않을 것으로 추측된다. 최근 메타분석에서 Helicobacter pylori 제균 치료가 위암발병을 33~47% 감소시킨다고 보고하였으나, 중국에서 시행된 무작위 대조 연구에서는 제균 치료가 위암의 전구 병변 감소에 도움이 되지 않았다고 보고하고 있어 위축성 위염이나 장상피화생을 동반한 경우 제균 치료가 위암 예방에 큰 도움이 되지 않을 수 있음을 제시하고 있다. 그렇다면 위축성 위염이 있는 경우가 많은 고령 환자에서는 과연 헬리코박터 제균 치료가 도움이 될 것인가? 저자들은 빅데이터 분석을 통해 헬리코박터 제균 치료가 위암 발병에 미치는 영향을 성별과 연령에 따라 분석하였다. 2003년부터 2012년까지 'Hospital Authority'에 등록된 clarithromycin 포함 3제 요법을 받은 환자들에서의 위암 발생률과 2003년부터 2013년까지 'Hong Kong Cancer Registry'에 등록된 성별과 연령이 일치된 대조군에서의 위암기대 발생률(expected incidence)을 비교하였다. 3제 요법을 받은 73,237명의 환자들을 확인하였을 때, 평균 7.6년의 추적기간 중 200명(0.27%)에서 위암이 발생하였다. 연령에 따라 40세 미만, 40~59세, 60세 이상의 그룹으로 나누어 각각 위암발생률을 대조군과 비교한 결과 60세 이상 환자군에서만 standardized incidence ratio (SIR)가 0.82로 감소하였다. 치료 성공여부에 따라 위암 발생률을 분석하였을 때, 제균 치료에 성공한 60세 이상 군에서 SIR이 0.78로 감소하였으나 재 치료를 받은 40~59세 군에서는 SIR이 2.43으로 증가하였다. 제균 치료시점이 위암 발생률에 미치는 영향으로는 제균 치료 후 10년 미만에서의 위암 발생률에는 큰 영향이 없었으나 10년 이상 경과한 경우 60세 이상 군과 40~59세 군에서의 위암 발병률이 대조군의 위암 예측 발병률보다 낮았다.

• Korean Journal of Biological Psychiatry
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• v.5 no.1
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• pp.107-113
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• 1998

Objectives : To evaluate the relation of onset-age and plasma level of ${\beta}$-endorphin, Ethanol, ${\beta}$-endorphin, cortisol and blood glucose were compared in 48 male alcoholics and 29 normal controls Methods : Alcoholics are divided into two groups by onset-age of alcoholism. Blood samples were obtained before and after 0.75gm/kg of ethanol consumption at the 7th admission day. Results : 1) The ratio of onset-age before 25 years to after 25 years of the patient group was 2 to 3. 2) There was no significant difference in age at admission between two patient groups. 3) There was no significant difference in change of plasma ethanol levels among three groups. 4) There was no significant difference in change of plasma ${\beta}$-endorphin levels among three groups. 5) There was no significant difference in change of plasma cortisol level among three groups. 6) There was no significant difference in change of fasting blood sugar level among two patient groups.

• Journal of Acupuncture Research
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• v.20 no.3
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• pp.209-216
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• 2003

목적 : 대표적인 motor neuron disease(MND)이면서 가장 치명적인 신경퇴행성 질환인 ALS의 발생 양상과 한방치료효과에 대하여 연구하였다. 방법: 상지대학교 부속 한방병원에 래원한 ALS 환자들의 성별, 연령, 발병일, 발병양상, 래원 당시의 병태양상 등을 분석하였고, 이 중 3개월 이상 입원치료를 통하여 치료과정 평가가 가능하였던 18명의 환자들의 치료 전과 치료 후의 변화양상을 평가하였다. 결과 : 외국의 보고에 비하여 여성 환자가 많았고 발병 연령도 유의하게 낮았으며 상지에서 최초의 증상이 발현되는 비율이 상대적으로 높았다. Bulbar From의 비율도 높았고, 대부분의 환자가 여성인 것도 특이하였다. 환자들이 생각하는 질병의 발생원인 중 약 80%가 stress나 정신적 충격 등을 지적하여 정신적 불안상태가 유관함을 추정할 수 있었다. 한방치료가 ALS를 호전시키지는 못하였으나 진행을 억제하였고, 국소적인 주소증을 완화시키며 심리적 안정 상태를 유지하는데 도움이 된다고 평가되었다.

• Journal of the Korea Convergence Society
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• v.8 no.8
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• pp.137-145
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• 2017

The purposed of this study was to identify cardiocerebrovascular disease risk assessment and the factors that affect cardiocerebrovascular disease risk. The subjects of this study were 1340 middle age women worker in one shipyard. This study was base on worker health check up data. Data were analyzed using SPSS18.0 program. "healthy group" were 1078(80.4%), "low risk group" were 45(3.4%), "moderate risk group" were 150(11.2%), "high risk group" were 67(5.0%). Age, HDL, LDL, smoking, family history of stroke, hypertension were the factors that affected the risk cardiocerebrovascular disease. Results of this study can be used as fundamental data for developing cardiocerebrovascular disease preventive program in middle aged women.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.8 no.1
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• pp.92-100
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• 1997

Objective：The objective of this study is to examine the clinical characteristics and behavioral comorbidity of patients with Tourette’s disorder. Method：Subjects consisted of 157 patients with Tourette’ disorder diagnosed by DSM-IIIR, who were examined and diagnosed from Jan. 1988 to May 1994 at the Tourette’s Clinic of Yonsei University Medical Center. Characteristics and behavioral comorbidity of Patients were assessed by a semi-structured interview schedule. Behavioral problems like hyperactivity, obsession-compulsion, self destructiveness, enuresis, sleep problem were assessed by global clinical impression. Results：The mean age of patients was 14.49(${\pm}7.99$) years. Patients consisted of 138 males (87.9%) and 19 females(12.1%). The sex ratio was 7：1, showing a male preponderance. The number of right-handers was 133(84.7%), and the number of non-right handers was 24(15.3%). Mean age of onset was 8.85(${\pm}4.56$) years, ranging from 2-to-16 years. More than half of the patients had their age of onset at 6-10 years. Bimodal peak in age of onset was observed；the first peak was around 6 and the second peak was around 10 years. There was no sex difference in bimodal age of onset. The most common initial symptom was eye blinking. More than 55% of patients reported eye blinking as their first symptom. The second common initial symptom was head turning and the third was vocal tic. The most common symptoms that patients reported on their first visit since onset were eye blinking(82.2%), head turning or nodding(57.9%), shoulder shrugging(52.7%) and forearm movement(32.6%). Of 157 cases, 101(64.3%) patients showed downward progression of symptoms, and 25(15.9%) showed upward progression of symptoms. Nineteen fathers(12%) of patients had a past history of obsessive-compulsive disorder(OCD). Seventeen fathers(10.6%) had a history of tic disorder. SSevenmothers(4.5%) had OCD, 4 mothers (2.5%) had tic disorder. One hundred and eighteen patients(75.1%) had comorbid hyperactivity, 95 patients(60.5%) had obsession, 55 patiens(35.0%) had self destructiveness, 46 patients(29.3%) had impulsivity, and 35 patients(22.3%) had enuresis. Age of onset had a significant positive correlation with age, duration, and the global severity of obsession；and a negative correlation with the severity of hyperactivity. Hyperactivity had a significant positive correlation with impulsivity, obsession-compulsion, enuresis, and self destructiveness. Obsession-compulsion had a significant positive correlation with hyperactivity, sleep problems, and self destructiveness. Conclusion：These data suggest that clinical characteristcs and behavioral comorbidity of patients with Tourette’ disorder in this study are similar to previous research findings in Korea and other contries. The younger the age of onset was, the more severe hyperactivity was, and the less severe obsession-compulsion was. And severity of hyperactivity had a positive correlation with the severity of obsession-compulsion, impulsivity, enuresis, and self destructiveness.

• Journal of the Korean Society of Radiology
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• v.1 no.1
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• pp.17-23
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• 2007

Background: Cerebrovascular diseases are known to show different patterns of incidence among regions and races. Therefore, it is very important to determine the incidence pattern of a specific area in order to diagnose, treat and prevent cerebrovascular diseases. The objective of the present study is to analyze quantitatively the incidence ratios of hemorrhagic and ischemic cerebrovascular diseases by season, by gender and by age. Methods: The subjects of this study were 1603 patients hospitalized for hemorrhagic or ischemic cerebrovascular diseases at the Department of Neurosurgery or the Department of Neurology of a University Hospital. Statistical analysis of data used Excel 2003 of Microsoft, and t-test was conducted using ORIGIN 6.0 of MICROCAL. Results: In the subjects, the incidence ratios of hemorrhagic and ischemic cerebrovascular diseases for four years, the period of this research, were 38.55% and 61.45%, respectively. The mean and standard deviation of age when hemorrhagic cerebrovascular diseases occurred were 58.20 and 12.60, respectively, and the percentages of subjects in their 40s, 50s, 60s and 70s were all around 20%. On the contrary, the mean and standard deviation of age when ischemic cerebrovascular diseases occurred were 65.01 and 13.59, respectively. The average age of patients with ischemic cerebrovascular diseases was older than that of patients with hemorrhagic brain diseases, and the percentages of those in their 60s, 70s and 80s were 15.53%, 37.06% and 27.72%, respectively. The season when hemorrhagic cerebrovascular diseases appeared most frequently was winter, which was followed by summer, spring and autumn. The season when hemorrhagic cerebrovascular diseases appeared most frequently was spring, which was followed by summer, winter and autumn. Conclusions: In this study, the incidence rates of hemorrhagic and ischemic cerebrovascular diseases were 38.55% and 61.45%, showing the rising percentage of ischemic cerebrovascular diseases. For making adequate prevention and disease control plans, it is considered necessary to make a long-term epidemiological investigation of cerebrovascular diseases.

• The Monthly Diabetes
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• s.240
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• pp.26-27
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• 2009

흔히들 백내장은 노화로 인해 자연스럽게 발생하는 질환으로 알려져 있다. 허나 최근 들어 비교적 젊은 나이에 백내장을 호소하는 환자들이 늘어나고 있는데, 그 발생요인으로 당뇨병도 한 부분을 차지하고 있다. 당뇨병이 있으면 일반인에 비해 백내장에 걸릴 확률이 7배 이상 높아지고, 나아가 발병하는 연령 또한 낮아진다. 치료하지 않고 방치한다면 시력저하는 물론 실명에 까지 이를 수 있는 백내장. 백내장이 무엇인지 알아보고 치료와 예방법에 대해 알아보자.