• 제목/요약/키워드: Epidemiologic study

검색결과 571건 처리시간 0.028초

강원도(江原道) 횡성군(橫城郡) 산간지역(山間地域)에 있어서 폐흡충감염(肺吸虫感染)의 역학적조사(疫學的調査) (Epidemiological Study on Paragonimus Infections in Hoengseong-Gun, Gangweon-Do)

  • 이영우;배경훈;안영겸
    • 농촌의학ㆍ지역보건
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    • 제6권1호
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    • pp.5-12
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    • 1981
  • Paragonimus infection is prevalent in Korea, establishing several endemic foci. Kim(1969) reported an endemic area in Hyeonbuk Myeon. Yangyang-Gun, but thereafter no further epidemiologic study of Paragonimus infection was performed in the Gangweon-Do. Hoengseong-Gun is mountainous area which is located in the southwestern part of Gangweon-Do and borders with Hongcheon-Gun on the east, with Pyeongchang-Gun on the east, with Yeongweol-Gun and Weonseong-Gun on the south, and with Yangpyeong-Gun on west. The author carried out an epidemiologic study of Paragonimus infection by intradermal test with V.B.S antigen, and of intermediate host (crayfish) in Hoengseong-Gun, Gangweon-Do. The results are summarized as follows: 1. The positive skin test reaction to Paragonimus antigen was 14.5% from 2,807 examiness; 16.0% in male and 11.6% in female and no sex or age difference on the skin test positive reactions was noticed among the villages. 2. The positive skin test reactions were 31.3% in Gapcheon-Myeon, 20.5% in Cheongil-Myeon and 19.8% in Woocheon-Myeon. Primary school children in Byeongjibang-ri, Gapcheon-Myeon showed positive in 36.4%. 3. The prevalence by skin test reaction by social strata was 16.1% (226 out of 1,408) in primary school children, 12.8% out of 725) in middle school, 6.4% (11 out of 172) in high school students, and 15.3% (77 out of 502) in inhabitants of Heongseong-Gun. 4. Metacercarial positives of Paragonimus in crayfish were 20.9%. Through the survey results, it is postulated that Heongseong-Gun, Gangweon-Do is to be categorized as an endemic area of Paragonimus infection.

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Epidemiologic investigation of gastrointestinal pathogens for Korean cats with digestive sign

  • Lee, Mi-Jin;An, Fujin;Lee, Gijong;Park, Jin-ho
    • 한국동물위생학회지
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    • 제45권2호
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    • pp.101-110
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    • 2022
  • This study was performed to investigate infectious gastrointestinal diseases in 115 Korean cats (83 indoors and 32 outdoors) with digestive signs such as diarrhea, anorexia or abdominal distention. Detection of infectious pathogens was analyzed using real-time PCR. As a result, 85 of 115 Korean cats were detected with feline corona virus (FCoV), feline parvo virus, Group A rotavirus, Clostridium perfringens (C. perfringens), Campylobacter coli (C. coli), Campylobacter jejuni, enterotoxigenic Escherichia coli, enteropathogenic Escherichia coli, Salmonella spp., Tritrichomonas foetus, Cyclospora cayetanensis, and Giardia lamblia. The most frequently detected pathogen was C. perfringens (52 cats, 61.2%), followed by FCoV (43 cats, 50.6%) and C. coli (16 cats, 18.8%). Also, single infection was the most common (43 cats), followed by double infection in 31 cats, triple infection in 7 cats, and quadruple infection in 4 cats. There was no significant relationship between pathogen detection and age, gender, living environment, weather, and diarrhea. However, there was a significant difference between the age group under 1 year and the age group 1~7 (P value<0.05). In this study, cats with suspected gastrointestinal infection were randomly evaluated, and other factors that could affect pathogen detection were insufficiently considered. For this reason, additional epidemiological investigations with a larger number of cats and sufficient consideration of the causes that may affect the results are needed. Nevertheless, it is thought that this study can also provide valuable information on gastrointestinal pathogens in Korean cats.

여성(女性) 냉증(冷症)의 설문(設問)을 통(通)한 실태분석(實態分析) (Epidemiologic Study of Female's Part-Cold Hypersensitivity Syndrome)

  • 장준복;이경섭;송병기
    • 대한한의학회지
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    • 제16권1호통권29호
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    • pp.21-35
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    • 1995
  • The female's part-cold hypersensitivity syndrome is a disease which the oriental people better than the western people suffer from and if it would be sick for a long time, it could bring into the other diseases. In the Oriental Medicine, the coldness is regarded as one of the most important causes which induce female's diseases. Nowadays the number of the female patients are ascending that serously appeal the coldness-sense and pain-sense at the particular part of the body, for example, hand, foot, abdomen, waist, external genital portion and so on. These are caused by female's own characteristics of the menstration and delivery, and the influence of the circumstances. The Oriental Medicine have better effects by the diagnosis and treatment according per symptom in the contrast with the Western Medicine having difficulties in the point of accurate diagnosis and treatment. This epidemiologic study was undertaken by using specifically designed questionair and physical examination to evaluate the incidence and degree of female's part-cold hypersensitivity syndrome in 362 parous women, Who were randomly selected among the patients visiting the Department of Gynecology, Kyung Hee Medical Center from Feb. to Jul. 1995. The results were as follows: 1. The overall incident of female's part-cold hypersensitivity syndrome was 92.8%. 2. Subdivision of 336 patients was made according to severity Grade I - 31.9%, severity Grade II - 46.9%, severity Grade III - 21.4%. 3. As for the appealed portion of female's part-cold hypersensitivity syndrome, foot and hand, lower abdomen, knee, waist, hip, shoulder, leg, and ankle were in desending order. 4. As for the causes of female's part-cold hypersensitivity syndrome, it was deeply associated with the management of the abortion, delivery and puerperium. 5. The incidence of female's part-cold hypersensitivity syndrome did not show incerased tenency according to the quantity and quality of female's menstration, leukorrhea, and the increase of parity. 6. 165 patients among 336 patients wanted the treatments of the Oriental Medicine.

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부산대학교병원 교정과에 내원한 구순구개열 환자들에 대한 역학조사 (An epidemiologic study on the cleft lip and/or palate patients who visited Dept. of Orthodontics, Pusan National University Hospital)

  • 손우성;백재호;이원철
    • 대한구순구개열학회지
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    • 제5권1호
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    • pp.43-58
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    • 2002
  • A General survey on the cleft lip and/or palate patients in Pusan National University Hospital was done. The conclusions were as follow. 1. In gender ratio, male was higher than female. 2. In the cleft type, unilateral cleft lip and palate, cleft lip and alveolus, and bilateral cleft lip and palate in higher ratio order. Left unilateral cleft lip and palate was higher than right in ratio. 3. In first hospital visiting age for dental treatment, the group from 6 years old to 12 years old was most and in that the age group for attending elementary school (about 7-8 years old) showed especially higher ratio. The large majority of patient were born in 1980's and lived in Pusan metropolitan city, KyungSangNamDo. Especially, most of them lived in the neighboring Held of Pusan National University Hospital. 4. Class III skeletal pattern and Angle's Class III molar relationship was most prevalent. Angle's Class II molar relationship showed relative higher ratio because tooth loss and malposition. 5. Primary lip closure in 3 months, secondary lip closure in 6-7 years old, palatal closure in 12-16 months and bone graft in 8-10 years old were operated mostly. Rhinoplasty and scar revision were operated in too early age so the need of infantile orthopedics must be considered. 6. Maxillary expansion and protraction were operated mostly in 8-11 years old but operating in primary dentition must be considered. 7. Tooth alignment were started mostly in mixed dentition and consideration about prosthodontic treatment and retention will be need. 8. In tooth anomaly, tooth malformation and missing were most prevalent.

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Rhabdomyosarcoma - an Epidemiological and Histopathologic Study of 277 Cases from a Major Tertiary Care Center in Karachi, Pakistan

  • Ahmad, Zubair;Din, Nasir Ud;Ahmad, Arsalan;Imran, Sheharbano;Pervez, Shahid;Ahmed, Rashida;Kayani, Naila
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권2호
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    • pp.757-760
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    • 2015
  • Aim: To present the epidemiologic data (age, gender, size etc) and histopathologic and immunohistochemical features of cases of rhabdomyosarcoma (RMS) reported in our department. Settings: Section of Histopathology, Department of Pathology and Microbiology, Aga Khan University Hospital, Karachi, Pakistan. Duration: All cases of RMS diagnosed between January 1, 2003 and December 31, 2012 were included in the study. Results: A total of 277 cases were included. Embryonal rhabdomyosarcoma (ERMS) was by far the dominant histologic type (87.4%) followed by alveolar type (ARMS)(9.4%). ERMS was much more common in males (64.0%)and over 65% of cases occurred in the first decade of life (over 90% in the first two decades). Head and neck region was commonest site for ERMS (46.7%), followed by the genitourinary system (16.1%). Over 65% cases of ARMS occurred in the extremities. Over 80% cases of ARMS occurred in the first 3 decades of life. Immunohistochemical staining for Desmin and MyoD1 was positive in 96.7% and 85.4% respectively. Conclusions: The epidemiologic data and microscopic findings in our patients are similar to international published data on rhabdomyosarcoma.

한국성인의 혈청지질이상과 식품섭취 (The Specific Food Consumption Pattern and Blood Lipid Profiles of Korean Adults)

  • 김영옥
    • 대한영양사협회학술지
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    • 제19권2호
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    • pp.124-139
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    • 2013
  • Unlike studies of Europeans and Americans, many epidemiological studies of the Korean population have indicated that their risk for cardiovascular disease does not decrease with a vegetable-rich diet. The different dietary practices of Koreans, who consume salted vegetables instead of fresh vegetables (common in the Western diet), has been suggested as a reason for this observation. Korea is in a period of rapid epidemiologic transition, which includes dietary and disease patterns; therefore, this study investigated differences in the food consumption pattern and blood lipid profiles of Koreans compared to Europeans and Americans. The identification of dietary patterns related to blood lipid abnormalities was carried out using the 2007~2009 Korean National Health and Nutrition Survey data from 14,056 subjects. Dietary patterns were analyzed according to food group and nutrient intake. Blood lipid abnormalities were classified into three groups: hypercholesterolemia, hypertriglyceridemia, and low HDL cholesterolemia (hypo-HDL-cholesterolemia). The prevalence of hypercholesterolemia, hypertriglyceridemia, and hypo-HDL-cholesterolemia was 12.4%, 16.2%, and 27.7% respectively. In our analysis, the low consumption of all food groups was related to hypercholesterolemia. The high consumption of vegetable-containing foods, alcoholic beverages, and the low consumption of milk products were associated with hypertriglyceridemia and hypo-HDL-cholesterolemia. Thus, unlike Europeans and Americans, the low consumption of all food groups is related to hypercholesterolemia and a low consumption of milk products is related to hypertriglyceridemia and hypo-HDL-cholesterolemia. Dietary pattern might play a role in epidemiologic transition of Korean. Also, this study implies necessity of further research using longitudinal data.

Characteristics of Incident Testicular Cancer in Lebanon - 1990-2015 Single Institutional Experience

  • Assi, Tarek;Nasr, Fadi;El Rassy, Elie;Ibrahim, Toni;Jabbour, Hicham;Chahine, Georges
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권4호
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    • pp.1899-1902
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    • 2016
  • Background: Despite the fact that testicular cancer is a major health issue with its increasing incidence, very few studies have described its characteristics in the Middle East, particularly in Lebanon. Materials and Methods: We report in this paper a retrospective pilot study of the characteristics of testicular cancer in Lebanon. The demographic, epidemiologic and survival characteristics of 178 patients diagnosed between 1990 and 2015 at an oncology clinic affiliated to Hotel Dieu de France Hospital were analyzed. Results: The mean age at diagnosis was $32{\pm}10years$. The most prevalent testicular tumor was the germ cell type (GCT) (95.2%) of which non-seminomatous tumors (NST) were the commonest (64.7%). Most of our patients were diagnosed at an early stage. Lymph node spread affected most commonly the retroperitoneal region and distant visceral metastases occurred in 14.6%. All patients underwent orchiectomy with 67% receiving adjuvant treatment, mainly chemotherapy. After a median follow up of 2,248 days (75.9 months) 16 patients were reported dead. Two, five and ten-year overall survival rates were 96%, 94% and 89% respectively. The median overall survival rate was not reached. Conclusions: Despite being part of the developing world, demographic, epidemiologic and survival analyses of testicular cancer reported in our study are in line with those reported from developed countries and would allow us to extrapolate management plans from these populations.

A Rapid Method for Estimating the Levels of Urinary Thiobarbituric Acid Reactive Substances for Environmental Epidemiologic Survey

  • Kil, Han-Na;Eom, Sang-Yong;Park, Jung-Duck;Kawamoto, Toshihiro;Kim, Yong-Dae;Kim, Heon
    • Toxicological Research
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    • 제30권1호
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    • pp.7-11
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    • 2014
  • Malondialdehyde (MDA), used as an oxidative stress marker, is commonly assayed by measuring the thiobarbituric acid reactive substances (TBARS) using HPLC, as an indicator of the MDA concentration. Since the HPLC method, though highly specific, is time-consuming and expensive, usually it is not suitable for the rapid test in large-scale environmental epidemiologic surveys. The purpose of this study is to develop a simple and rapid method for estimating TBARS levels by using a multiple regression equation that includes TBARS levels measured with a microplate reader as an independent variable. Twelve hour urine samples were obtained from 715 subjects. The concentration of TBARS was measured at three different wavelengths (fluorescence: ${\lambda}-_{ex}$ 530 nm and ${\lambda}-_{em}$ 550 nm; ${\lambda}-_{ex}$ 515 nm and ${\lambda}-_{em}$ 553 nm; and absorbance: 532 nm) using microplate reader as well as HPLC. 500 samples were used to develop a regression equation, and the remaining 215 samples were used to evaluate the validity of the regression analysis. The induced multiple regression equation is as follows: TBARS level (${\mu}M$) = -0.282 + 1.830 ${\times}$ (TBARS level measured with a microplate reader at the fluorescence wavelengths ${\lambda}-_{ex}$ 530 nm and ${\lambda}-_{em}$ 550 nm, ${\mu}M$) -0.685 ${\times}$ (TBARS level measured with a microplate reader at the fluorescence wavelengths ${\lambda}-_{ex}$ 515 nm and ${\lambda}-_{em}$ 553 nm, ${\mu}M$) + 0.035 ${\times}$ (TBARS level measured with a microplate reader at the absorbance wavelength 532 nm, ${\mu}M$). The estimated TBARS levels showed a better correlation with, and are closer to, the corresponding TBARS levels measured by HPLC compared to the values obtained by the microplate method. The TBARS estimation method reported here is simple and rapid, and that is generally in concordance with HPLC measurements. This method might be a useful tool for monitoring of urinary TBARS level in environmental epidemiologic surveys with large sample sizes.

포항지역에서 발생한 무균성 뇌막염 환아의 역학적 양상 연구 : 1997~2002 (An Epidemiologic Investigation of Aseptic Meningitis Occurred in Pohang City : 1997~2002)

  • 김석헌;배순호;정해관;정철;이선주;고준태;김문규;정은영
    • Pediatric Infection and Vaccine
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    • 제10권2호
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    • pp.193-199
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    • 2003
  • 목 적 : 1997년부터 2002년까지 6년 동안 포항지역에서 발생한 무균성 뇌막염의 역학적 양상을 연도별로 비교하고 누적발생률을 확인하여 추후 무균성 뇌막염의 전파양상 규명과 예방에 기초자료를 제공하기 위해 본 연구를 시행하였다. 방 법 : 1997년부터 2002년까지 포항지역 3개 종합병원에 무균성 뇌막염으로 1일 이상 입원한 15세미만 환아 중 소아과 전문의와 전공의의 의무기록지 검토를 통해 확인된 1,750명을 대상으로 역학적 발생양상을 조사하고, 누적발생률을 산출하였다. 결 과 : 전산기록으로 확인한 환아의 95.2%(1,750명 : 남아 1,078명, 여아 672명)를 무균성 뇌막염으로 확인하였다. 6개년도 모두 남아가 여아보다 많았으며(1.6 : 1), 1997년에 464명이 발생한 이후 발생수가 감소하였다가 2000년 이후 다시 증가하여 2002년 648명으로 가장 많이 발생하였다. 발생월별 분포는 6월이 31.3%로 가장 많았으며, 5월부터 8월까지 4개월간 집중적으로 발생하여 전체 발생의 84.2%를 차지하였다. 증상 발현일부터 입원까지 걸린 기간은 0일에서 35일까지 다양하였으며, 평균 $4.19{\pm}2.96$(중앙값 3일)일이 소요되었다. 5일 이내가 1,417명(81.0%)을 차지하였다. 증상발현 당일 입원한 경우는 3명(0.2%)에 불과하여 증상이 진행된 후에 병원을 방문하는 것으로 확인되었다. 환아의 연령을 3단계로 구분하여 각 연도별로 인구 10만명당 누적발생률을 조사한 결과 각 연도마다 다발 연령군이 상이한 결과를 보였으며, 매년 특정 연령군 대에 환아가 집중하지 않는 것으로 확인되었다. 결 론 : 1997년부터 2002년까지 포항지역 3개 종합병원에서 입원 치료받은 무균성 뇌막염 환아의 역학적 양상을 조사하였다. 포항지역의 무균성 뇌막염 환아가 매년 지속적으로 보고되고 있으므로 원인을 규명하고 장기적인 예방대책을 수립하기 위한 연구가 계속되어야 할 것이다.

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호흡기계(系) 질환의 역학적(疫學的) 조사방법 개발에 관한 연구(I) -번역설문서 응답양상(應答樣相)에 대한 비교평가- (A Comparative Study on Responses to Korean Version Questionaires on Respiratory Symptoms)

  • 안윤옥;박병주;권이혁
    • Journal of Preventive Medicine and Public Health
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    • 제15권1호
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    • pp.47-56
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    • 1982
  • Korean versions of British Medical Research Council (MRC), Cornell Medical Index(CMI), and American Thoracic Society 78 (ATS-DLD-78) respiratory questionaires were compared with each other, and were tested the stability, in terms of test-retest reliability, of each questions by self-administration of those to 156 medical students. The results obtained and conclusions drawn are as follow: 1. The degree of agreements between responses to the comparable questions of CMI vs MRC, and of CMI vs ATS-DLD-78 were not satisfactory. There were, however, $71{\sim}100$ per cent of agreement between responses to the questions on Cough, Wheezing, Phlegm, Breathlessness, and Chest illness of ATS-DLD-78 vs MRC questionaire. And the ATS-DLD-78 tended to yield greater number of positive responses than MRC (See Table 4). 2. All of the coefficient of stability of each questions in 3 questionaires were statistically significant, ranged $77{\sim}100$ per cent, except that of the question on episode of cough and phlegm in ATS-DLD-78 questionaire (See Table 5-1). The question is composed of two collateral conditions, 'lasting for 3 weeks or more' and 'each year'. 3. It can be insisted that the Section-B questions of CMI is not proper for use in epidemiologic survey on respiratory illness. And rather than MRC, the ATS-DLD-78 questionaire deserves to prefer to be used in epidemiologic studies on respiratory illness. 4. In question-wording, especially, of inquiring past experience, it is possible to lessen the reliability of the question that including collateral conditions such as 'the duration lasted of symptoms', and moreover, of which words are not common usage. For example, for Korean '10days' or 'half a month' is more familiar time unit rather than 'week'.

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