• 응용통계연구
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• 제36권4호
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• pp.309-322
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• 2023

혹스 과정은 자기 자극 특성을 가진 점 과정으로서, 지진 발생시 본진으로 인한 여진이 발생되는 현상을 설명하는 데 주로 쓰이는 확률 모형이다. 최근에는 전염병 확산, SNS에서의 소식 확산 등 자기 자극을 특성을 가진 다양한 현상을 설명하는 데 활용되고 있다. 혹스 과정은 다양한 형태의 자극 함수를 도입하여 발생하는 사건의 특성에 따라 유연하게 변형이 가능한데, 최대 우도 추정량을 구하는 것이 쉽지 않기 때문에 최근까지도 개선된 추정 방법이 제시되고 있다. 이 논문에서는 혹스 과정을 설명하기 위해 조건부 강도 함수와 자극 함수에 대해 설명하고, 지진, 전염병, 범죄 및 금융에서 활용되었던 예와 추정 방법을 알아보도록 한다. R-패키지 ETAS를 이용하여 2017년 11월부터 2022년 12월까지 한국 경상도에서 발생한 지진을 분석하도록 한다.

• 한국심리학회지 : 문화 및 사회문제
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• 제16권3호
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• pp.221-240
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• 2010

본 연구의 목적은 재미 한인 남성들의 우울증 실태를 파악하고 그들의 인구사회학적 특성, 이민관련 특성, 심리사회적 특성이 우울증에 미치는 영향을 검증하는 것이다. 인구사회학적 특성 변인은 나이, 학력, 직업, 수입이고, 이민관련 특성 변인은 미국거주기간, 시민권취득여부, 문화적응도이다. 심리사회적 특성 변인은 분노, 결혼만족도, 사회적 지지를 포함한다. 본 연구의 대상은 나이가 20세 이상 64세 이하인 엘에이 카운티에 거주하는 재미 한인 결혼남성들을 편의표집방법으로 선정하였다. 구조화된 설문지를 이용하여 자기기입식 방법으로 자료를 수집하였다. 배부된 설문지는 총 310부이고 회수된 201부 중 응답이 불충분한 5부를 제외한 196부를 본 연구의 분석에 사용하였다. 위계적 다중회귀분석을 실행한 결과 월수입, 분노, 결혼만족도, 사회적 지지가 연구 참여자들의 우울증에 유의미한 영향을 미치고 있는 것으로 나타났다. 그러나 나이, 학력, 직업, 시민권취득 여부, 문화적응도는 우울증과 유의미한 연관성이 없는 것으로 나타났다. 연구결과를 바탕으로 실천적 함의를 제시하였다.

• 한국환경보건학회지
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• 제49권3호
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• pp.169-177
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• 2023

Background: The Korea Centers for Disease Control and Prevention (KCDC) has identified cases of people suspected of suffering lung disease potentially caused by chloromethylisothiazolinone/methylisothiazolinone (CMIT/MIT) used in humidifier disinfectants (HDs). The Korean Ministry of Environment (MoE) epidemiological investigation and toxicity test study found that HDs caused health damage such as asthma and lung disease. Objectives: The main purposes of this study were to classify the HD exposure rating and to analyze the exposure characteristics that affect exposure to CMIT/MIT HDs. Methods: The exposure characteristics and socio-demographic characteristics of victim participants using CMIT/MIT HDs were investigated through questionnaires. An inhalation no observed adverse effect level (NOAEL) for CMIT/MIT was produced based on inhalation toxicity values. Exposure ratings (class 1~class 2) were cross-tabulated with clinical ratings (acceptable~unacceptable). A correlation analysis was conducted with the main exposure characteristics that affect the exposure concentration of CMIT/MIT HDs. Results: The concentration in indoor air of CMIT/MIT was 8.75±25.40 ㎍/m³, and the exposure concentration was 2.30±6.29 ㎍/m³. The CMIT/MIT exposure rating of 67 participants with high exposures of not more than MOE 100 were evaluated as 14.5%, while the damage participants who matched the clinical rating made up 4.5%. The exposure concentration of CMIT/MIT showed a positive correlation with the daily usage amount and usage frequency, and a negative correlation with volume of the indoor environment. Conclusions: A new exposure rating could be suggested and calculated based on the MOE, and the factors affecting the exposure concentration could be identified.

• Journal of Preventive Medicine and Public Health
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• 제22권2호
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• pp.290-301
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• 1989

This is preliminary report on anthrax epidemic occurred in an island with about 100 residents. Since 1982 there had been sudden deaths among all kinds of domestic animals including cattle, dogs, ducks, chicken and goat but only a few among cats in an isolated island about three hours distance away by ferry boat from Mokpo city. From 1986 through 1988 nine human deaths and four patients occurred, which made the government intervene for investigation on June 25 1988. The epidemiological investigation consisted of interview survey and medical examination, medical record analysis, laboratory work to isolate the pathogens under the direction of hypothesis derived from the study and further confirmation of the pathogens by international institute. The summarized results are as followings: 1. According to the interview survey there were many deaths among domestic animals usually in cold and dry season such as January through March and September through November; 36 heads of cattle leaving one head, more than 40 hogs(all), hundreds of chicken leaving few alive, goats that had taken home from mountain and two or three cats out of around 40 had sudden deaths from 1982 till 1985, when the residents stopped to purchase and take them into the island anymore. Also there were eleven persons who had experienced the similar syndrome complex to those of admitted and expired patients and four of them revealed typical chest X-ray findings; from one of these four patients(Rho) B. anthracis is isolated. 2. Medical record on patients who had been admitted, showed common characteristics of the disease course. On admission they had either gastrointestinal or upper respiratory infection symptoms which invariably progressed to septicemic nature with pulmonary interstitial infiltration and mediastinal widening/bulging, and then to deadly acute respiratory distress syndrome. At the end stage chest X-ray revealed multiple bullous emphysema. One of another characteristics was oral ulceration with bleeding occurred in about 50% of the patients. Laboratory test results in common were leukocytosis with left shift and abnormal liver and kidney functions, particularly at the later stage of the illness. 3. Epidemiological characteristics was striking in that both mortality and incidence rates were high: the mortality rate was 8.7% average, male being three times higher than females but there was no distictive clustering by age group. The incidence rate for both sexes was 28.2% and there was no sex difference although a tendency of higher incidence among older ages was noticed. The highest mortality and incidence were observed in Won village where the first death of animal occurred and with the highest frequency among three villages of the island. 4. Among twelve bacilli species isolated from various specimens, two strains, one from patient and the other from soil where the recently died cow is hurried, were confirmed as B. anthracis by Pasteur Institute and CDC of USA(strain from soil). CDC reported that the strain did not produce capsule in bicarbonate media but reacted with the bacteriophage and one of five sera taken from the patients. Mode of transmission as well as incubation period of the agent has not been established yet, which needs further investigation in relation to the antigenic structure of the variant when it is confirmed.

• Pediatric Infection and Vaccine
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• 제20권3호
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• pp.168-177
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• 2013

목적: 본 연구는 소아에서 hMPV 감염증의 역학과 임상양상을 RSV A, RSV B와 비교하여 분석하고자 하였다. 방법: 2007년 9월부터 2012년 7월까지 호흡기 증상으로 내원한 소아들 중 RT-PCR을 통해 hMPV (n=36), RSV A (n=106), RSV B (n=51) 등의 호흡기 바이러스가 검출된 환자들의 의무기록을 후향적으로 분석하였다. 결과: 월별 분포에서 hMPV는 5월에 가장 많았고 RSV는 11-12월에 집중적으로 나타났다. hMPV 환자군의 평균 연령은 RSV에 비해 높았으며(각각 $29.9{\pm}32.5$개월 vs. $13.6{\pm}15.4$개월, P<0.001; $29.9{\pm}32.5$개월 vs. $12.1{\pm}13.5$개월, P<0.001), RSV A 환자군에 비해 발열 비율이 높았고(97.2% vs. 67.9%, P<0.001), RSV A, B 환자군에 비해서 천명 발생 비율이 낮았다(각각 16.7% vs. 47.2%, P=0.001; 16.7% vs. 37.3%, P=0.037). hMPV 환자군에서 RSV A, B에 비해 세기관지염 발생 비율이 낮았으며(각각 5.6% vs. 34.9%, P=0.001; 5.6% vs. 29.4%, P=0.006), RSV A 환자군에 비해 폐렴 발생 비율이 높았다(72.2% vs. 50.0%, P=0.047). 주사 항생제를 사용한 비율은 hMPV 환자군에서 RSV A, B 환자군에 비해 더 높았다(각각 69.4% vs. 39.6%, P=0.002; 69.4% vs. 43.1, P=0.015). 결론: 본 연구는 hMPV 감염증을 RSV A, B 감염증과 비교하여 임상적 및 역학적 특성을 비교하였다. 봄철에 발생하면서 RSV 감염에 비해 더 높은 연령에서 발생하고, 폐렴 발생이 많은 hMPV의 특징은 소아 호흡기 감염환자의 진료에 도움이 될 것으로 판단된다.

• 국제물리치료학회지
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• 제5권1호
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• pp.661-667
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• 2014

This study is a cross-sectional study for conscripts with chronic low back pain, where it is designed to investigate general characteristics that conscripts with chronic low back pain carry, and it is also aimed to analyze the correlation as well as discrepancy within pain, depression and body mass index depending on their ranks. In this study, 90 Korean conscripts with chronic low back pain participated. And in order to analyze general characteristics as well as pain, depression and body mass index of the subjects, this study adopted a survey questionnaire upon general characteristics, and it also employed Visual Analogue Scacle(VAS) and Center for Epidemiological Studies Depression(CES-D) Scale which have proven their credibility, where BMI values for the subjects were calculated based on 'Asian Pacific standard' Body Mass Index(BMI). From the general characteristics exhibited by the subjects through this study, average age and average height of the subjects were $20.78{\pm}1.41$ and $175.97{\pm}5.34$ respectively; and corporals displayed the highest ratio of 42% with the chronic low back pain while 40% of the total subjects experienced the duration of the illness less than 6 to 9 months. Moreover, 57.8% of all subjects were reportedly suffering moderate pain, and 48% exhibited depression while 49% carried BMI value between 18.5 and $22.9kg/m^2$(normal range). Based on the analysis of correlation among pain, depression, discrepancy of BMI depending on the ranks and each independent variable, it appears that there is no significant difference amongst the ranks, and there is no correlation between independent variables; however, it was obvious that all groups divided by the ranks had a moderate pain(45-74mm), depression(${\geq}16$) and BMI value in normal range(18.5-22.9).

• 한국노년학
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• 제36권3호
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• pp.693-709
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• 2016

손자녀를 돌보는 한국 조모들의 돌봄 특성에 따른 우울 증상을 살펴보기 위하여 시행한 연구이다. 한국고령화연구패널조사 4차 자료(2012년) 참여자 중, 손자녀가 1명 이상인 여성은 총 3,291명이다. 이 중 손자녀를 돌본경험이 있는 127명을 대상으로 하였다. 돌봄 제공 손자녀 수, 연간 돌봄 기간 및 주당 돌봄 시간에 따라 우울증상에 차이가 있는지 다중 로지스틱 회귀분석을 실시하였다. 사회경제적 특성과 건강상태(주관적 건강, 만성질환 이환 개수, 통증 유무)를 통제하였을 때, 조모들은 손자녀 돌봄 기간이 길수록 우울 증상이 낮게 나타났고, 이와 반대로 주당 돌봄 시간이 길수록 우울 증상이 높게 나타났다. 손자녀를 돌보는 조모는 고령여성이 가지는 다양한 건강 문제와 더불어 돌봄 제공자 역할을 받아들일 수밖에 없으며, 이 과정에서 주당 돌봄 시간이 길수록 우울 증상 고위험군에 속할 확률이 높아진다. 손자녀 돌봄 특성과 정신 건강의 관련성에 대한 상세한 파악과 이해를 통해 손자녀 돌봄에 대한 사회적 책임 분담 등 지원 서비스와 정책에 대한 논의가 이어져야 하겠다.

• 대한수의학회지
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• 제27권2호
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• pp.227-233
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• 1987

This study was conducted to determine the epidemiological characteristics of Campylobacter enteritis. A total of 187 fecal specimens of Korean native goat were examined for the presence of C. jejuni and C. coli by direct plating. Fifty strains isolated were examined for biochemical and serological properties and susceptibility to 19 chemotherapeutic agents. A total of 29(15.5%) C. jejuni and 21 (11.2%) C. coli were isolated from the fecal specimen of 187 Korean native goats. Of the 50 isolates of C. jejuni and C. coli, 29 isolates of C. jejuni grouped as 7 biotypes (1,2,3,4,6,7 and 8) and biotypes 1(34.5%), 2(17.2%) and 3(20.7%) were encountered most frequently. Twenty-one C. coli strains were differentated into biotype I (61.9% of the isolates) and biotype II (38.1%). Of the 29 C. jejuni strains examined, 24(83.0%) were typable by the Lior serotyping scheme and five isolates were non typable. C. jejuni grouped as 8 serotypes, serotype 4(24.1%) and 26(20.7%) were encountered most frequently. In the case of 21 strains of C. coli grouped as 6 serotypes, the most frequent serotypes were 21(28.6%) and 25(23.8%). Total of 50 strains of isolated were all susceptible to amikacin, clindamycin and tobramycine. Overall 85% of isolates were sensitive to erythromycin, doxycycline, chloramphenicol, flume-quine, kanamycin, gentamicin, nalidixic acid, polymyxin B, colistin, tetracycline and ampicillin, but about 65% of isolates were resistant to cefamandole and ethyl hydrocuprein hydrochloride.

• Asian Pacific Journal of Cancer Prevention
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• 제14권4호
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• pp.2649-2656
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• 2013

Background: Depression is common in breast cancer patients. The aim of this paper was to make a systematic review of its prevalence and associated factors oin breast cancer survivors. Materials and Methods: An extensive systematic electronic review (PUBMED, CINAHL, PsyINFO and Ovid) and handsearch were carried out to retrieve published articles up to November 2012, using Depression OR Dysthymia AND (Cancer OR Tumor OR Neoplasms as the keywords. Information about the design of the studies, measuring scale, characteristics of the participants, prevalence of depression and its associated factors from the included studies were extracted and summarized. Results: We identified 32 eligible studies that recruited 10,826 breast cancer survivors. Most were cross-sectional or prospective designed. The most frequent instrument used to screen depression was the Center for Epidemiological Studies for Depression (CES-D, n=11 studies) followed by the Beck Depression Inventory (BDI, n=6 studies) and the Hospital Anxiety and Depression Scale (HADS, n=6 studies). CES-D returned about similar prevalence of depression (median=22%, range=13-56%) with BDI (median=22%, range=17-48%) but higher than HADS (median=10%, range=1-22%). Depression was associated with several socio-demographic variables, cancer-related factors, treatment-related factors, subject psychological factors, lifestyle factors, social support and quality of life. Conclusions: Breast cancer survivors are at risk for depression so that detection of associated factors is important in clinical practice.

• 재활치료과학
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• 제9권2호
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• pp.73-86
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• 2020

목적 : 본 연구의 목적은 여대생의 인지(자책, 숙고) 및 행동적 회피요인과 수면의 질의 관계에서 우울증상의 매개효과를 검증하는 것이다 연구방법 : 본 연구는 지역사회 1,000명의 여대생을 대상으로 우울증상(CES-D), 반추적 반응(K-RRS), 인지-행동 회피(CBAS), 수면의 질(PSQI)을 평가하였다. 최종 분석대상은 총 947명이었다. 자료분석은 SPSS 18.0과 AMOS 22.0 통계프로그램을 사용하였다. 결과 : 첫째, 자책과 수면의 질의 관계에서 우울증상의 완전매개효과가 유의미한 것으로 나타났다. 둘째, 숙고와 수면의 질의 관계에서 우울증상의 매개효과는 유의하지 않았으며, 숙고는 우울증상을 예측하지 않았다. 셋째, 행동적 회피와 수면의 질의 관계에서 우울증상의 매개효과가 유의미한 것으로 나타났다. 또한 행동적 회피는 수면의 질을 직접적으로 예측하였다. 결론 : 본 연구는 지역사회의 일반 여대생의 우울증상과 수면문제에 대한 자책의 더 병리적인 특성을 숙고와 비교하여 입증하였다. 또한 수면문제에 영향을 미치는 우울증상과 행동적 회피 요인의 주요한 역할을 밝혔다는데 의의가 있다.