• 대한지역사회영양학회지
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• 제3권1호
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• pp.76-93
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• 1998

Three hundred sixty-two(male 131, female 231) elderly aged over 65 in Chungb- uk area were interviewed to determine the disease states and drug usage patterns. The prebalence of disease was 78% and women reported more chronic diseases(83%) than men(71%). Elderly who live with spouse and have an occupation have a lower rate of disease. Average number of diseases of the elderly was $1.8\pm{1.1}$, and women$(2.1\pm{1.3)}$ have significantly higher average number of diseases than that of men$(1.4\pm{0.7)}$. Also the elderly in urban areas$(2.1\pm{1.4)}$ have significantly higher number of diseases than that of the elderly in rural areas$(1.6\pm{0.9)}$. Arthritis, hypertension, cardiovascular and gastric diseases were the most frequently listed chronic diseases in order for both men and women. Anemia and fracture of bone were relatively higher in women than in men. Particularly, the arthritis of the urban elderly have a rate of 1.5 times higher than that of the rural elderly. Fifty-two percent of the elderly were currently using drugs ; among drug users 71.2% used prescription drugs and 20.5% used nonprescription drugs. The average number taken per person was 2.1$\pm$1.4 and there was no sex or age difference. However, the elderly in rural areas $(2.7\pm{1.7)}$ consumed a significantly higher number of drugs than those in urban areas$(1.7\pm{0.7)}$. The average number of prescripti- on drugs taken was 2.0$\pm$1.4 while the average of nonprescription drugs taken was $(1.3\pm{0.6)}$. Analgesics and antihypertensive drugs were most commonly used. Vitamin and analgesics were the most frequently used self-prescribed drugs. It was noted that potential adverse drug interaction by concominant drug consumption for arthritis and antihypensive drug, abuse of digestants and antiacid without treatment of the underlying disease, and misuse of quick-acting bowel medications were problematic for the elderly. In addition drugs used for the elderly have some adverse effect on the digestive system. The types and composition of drugs used by the elderly were identified and presented. Medication compliance was poor and 13.5% reported adverse reactions such as edema, heartburn, nausea, and difficulty with eating. Seventeen percent of the elderly obtained drugs arranged by those other than medical staff. Also, even among those elderly who obtained drugs prescribed by a doctor, 69.1% of subjects had not receive instruction about potential adverse reactions. These results suggest that nutritional problems related to drug usage might exist and so dietitians, either individually or as members of health teams, need to have a better understanding of drug-nutrient interaction and closer supervision, and drug information/education service should therefore be provided to prevent or minimize adverse drug reaction in elderly users of medication.

• 대한교통학회지
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• 제31권3호
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• pp.86-95
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• 2013

본 연구에서는 장래 교통수요의 변화에 영향을 주는 요인을 위험요인으로 선정하여, 위험요인 변화에 따라 달라지는 수요예측 값의 범위를 제시할 수 있는 교통수요 보정모형을 개발하였다. 장래 교통수요의 변화에 영향을 주는 요인으로 영향권인구, 1인당 자동차 등록대수, 3차산업종사자 비율, 도시간격 등이 선정되었고, 이를 바탕으로 수요예측의 오차율을 산정하는 모형을 개발하였다. 6개의 고속도로 노선에 모형을 적용하여 대상구간의 영향권 인구(20만명 기준)에 따라 각각 다른 사분위값을 반영하여 교통수요예측 결과의 오차율을 산정하여 수요예측을 보정하였다. 개발된 모형을 청원-상주 고속도로에 적용해 본 결과, 교통량 오차율의 차이를 50% 이상 보정 가능한 것으로 분석되어 본 연구를 통해 개발된 모형이 효과가 있음을 검증하였다. 또한 논문의 말미에 본 연구의 한계와 논문의 향후 연구과제에 대해서도 논하였다.

• Current Research on Agriculture and Life Sciences
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• 제22권
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• pp.19-27
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• 2004

마늘 총 재배면적은 우리나라 채소재배면적의 약 9%을 점유하고 있으며, 연간 수요량도 1,000~1,500톤 정도씩 늘어가는 추세이다. 또한 개인 소비량도 약 10kg 내외로 매년 증가추세이므로 농가에서는 중요한 소득 작물로 자리 잡고 있다. 본 연구는 경운기 부착형 마늘 자동 파종기 개발에 필요한 설계인자 구명을 위하여 파종 작업과정, 파종방법, 마늘 종구의 파종깊이와 파종자세에 따른 생육상태를 조사하였고 마늘의 크기와 무게를 측정하였다. 또한 마늘 인편을 자유 낙하시켰을 경우의 인편의 착지자세를 조사하였다. 또한 가장 핵심 부분인 마늘 배종 장치의 자동정렬장치 개발을 위해 Working Model 3D Program를 이용하여 설계요소를 파악하였다. 연구결과는 다음과 같다. 1. 마늘의 크기를 측정한 결과 평균 폭 3cm, 높이 3cm 길이 4cm로 나타났다. 2. 마늘의 무게는 평균 4g정도였다. 3. 마늘 파종 깊이는 3cm가 적정함을 알 수 있었다. 4. 마늘 배종장치는 마늘을 자유 낙하시키는 장치로 개발한다. 5. 마늘을 15cm의 일정한 간격으로 파종하기 위해서 종구는 약 0.75초마다 하나씩 파종기에서 배종되어야 한다. 6. 마늘 자동정렬장치의 설계인자는 원통의 지름(D) 4cm, 원통사이의 거리(d) 1cm, 회전수 36rpm, 원통의 경사각(${\Theta}$) $8.4^{\circ}$가 가장 적당한 것으로 나타났다.

• 농촌의학ㆍ지역보건
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• 제21권2호
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• pp.209-220
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• 1996

경상북도 문경시지역 중 9개 읍면에 거주하는 30세이상 주민 28.883명을 대상으로 1993년 10월 1일부터 1994년 2월 28일까지 건강면접조사한 자료중 5,797명을 무작위로 추출하여 만성퇴행성질환 유병률과 이용의료기관실태를 분석하였다. 인당유병률은 1,000명 당 336이었고 남녀별로는 남자는 278, 여자는 388이었다. 건당유병률은 367이었으며 남자 300, 여자 425였다. 건당유병률은 여자가 남자보다 유의하게 높았다(p<0.05). 연령별 인당 유병률은 30대는 106, 40대 223, 50대 366, 60대 407, 70세 이상 457로서 연령이 높아짐에 따라 유병률도 증가하였다. 만성퇴행성질환 건당유병률 1위는 신경통(128), 2위 만성위염(64), 3위 관절염(54), 4위 고혈압(44), 5위 당뇨(14) 순이었다. 남자는 1위가 신경통, 2위 위염, 3위 관절염, 4위 고혈압, 5이 천식이었고, 여자는 1위 신경통, 2위 관절염, 3위 위염, 4위 고혈압, 5위 당뇨였다. 신경통, 관절염, 고혈압 등의 질환은 남자보다 여자의 유병률이 유의하게 높았으며, 주풍(뇌졸증), 결핵, 간경화증 등의 유병률은 여자보다 남자가 유의하게 높았다. 만성퇴행성질환자의 이용의료기관은 최초에는 병 의원 이용율이 높았고, 최종 또는 현재는 보건(지)소, 의원 및 보건진료소를 많이 이용하였다. 질병별로는 신경통, 관절염 천식은 최초에는 의원을, 최종 또는 현재는 보건(지)소, 조건진료소를 많이 이용하였다. 고혈압과 결핵은 최초, 최종 모두 보건(지)소를 가장 많이 이용하였고, 당뇨, 중풍, 암, 심부전증, 간 경화증, 신부전증은 병원을 가장 많이 이용하였다.

• Journal of Nutrition and Health
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• 제10권4호
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• pp.43-58
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• 1977

Kojedo is the second largest island in Korea and a total population of 115,500 is living on the island of 394.69 sq. km. Under the direction of three nutrition professors, nutrition surveys in two villages in Kojedo, namely Siljun Ri in Hachung Myon and Soowol Ri in Shinhyun Myon, were carried by 30 college senior students majoring in nutrition from August to 20 August 1977. From a total of 176 households of the two villages, 67 households were randomly selected and 390 family members of the households were subjcets of the nutrition surveys. The precise weighing method was used in evaluating the kinds of foods and nutrient intakes of the subjects for three consecutive days. Thirty-seven pre-school children aged between 3 to 6 years and 27 fertile women were examined for biochemical findings and physical status. The main purposes of the surveys are to provide baseline data on nutrition in Kojedo Island for the Kojedo Community Development Project and to compare the nutritional status of the villages of Siljun Ri and Soowol Ri. Siljun Ri is located in the pilot project area of the Koiedo Community Health Project sponsored since December 1970 by the Christian Medical Commission of the World Council of Churches. While Soowol Ri is a control village for comparison. The results obtained are summarized as follows: Food Intake The average food intake per person per day in Siljun Ri, 1064 grams (91.7% in vegetable foods and 7.6% in animal foods) was 90 grams more than that of Soowol Ri, 974 grams (92.8% in vegetable foods and 5.9% in animal foods). However, the food intake per pre-school child in Siljun Ri, 485 grams (92.6% from vegetable foods and 6.4% from animal foods) was 21 grams lower than that of the Soowol Ri, 506 grams (88.5% from vegetable foods and 6.5% from animal foods). The average intake of beans was 16 grams(1.5% out of the total food intake) in Siljun Ri and 21 grams(2.2% of the total food intake)in Soowol Ri. The villagers should be guided for more consumption of soybeans to improve the quality of protein intake from vegetable foods. Nutrient Intake The adult intake in Siljun Ri and Soowol Ri were 2,529 kcal and 2,511 kcal respectively. The average energy intake of pre-school childen in Siljun Ri was 948 kcal and that for adult and 1,500 kcal for childen aged between 4 to 6 years-given by the Korea FAO Association, the diets in both villages were not adequate. Average daily protein intake of the subjected adult in Siljun Ri was 78.4 grams and that of Soowol Ri was 76.2 grams, while pre-school children took 30.7 grams in the former village and 31.7 grams in the latter village per child per day. The protein intake in both villages were lower than the recommended allowances, 80 grams for adult and 45 grams for $4{\sim}6$ years childen, and animal protein intake of the all subjects was very much lower than the RDA. The main charecter of the diet has been found low in quality of protein and high in carbohydrate. The calcium intakes of the pre-school children in both villages, 251.9 milligrams in Siljun Ri and 218.8 milligrams in Soowol Ri, were very much lower than the recommended allowance of 500 milligrams per day. It is apparent that the diet for children should be supplemented with calcium. Among the vitamin group, the daily average intakes of vitamin A and $B_{2}$(thiamine), $B_{2}$(riboflavin), C(ascorbic acid), and niacin were not adequate for the children in both villages. Especially the intake of riboflavin, 0.4 milligrams in both village children, was much lower than the RDA, 0.9 milligrams per day. Physical Characteristics Average height, weight, chest and head circumference of the pre-school children in both villages were similar to those of the Korean standard given by the Korean Paediatrics Association except that the average height of pre-school boys in Siljun Ri was 8 cm higher than the Korean standard of 105 cm. The mean values of upper arm circumference and skinfold thickness of pre-school boys in both villages were the same, 15.4 cm for upper arm circumference and 6.8 mm for skinfold thickness, but the mean values of those of the girls in Siljun Ri were higher than those of pre-school grils in Soowol Ri. Biochemical Findings Avera ge hemogobin value of boys and girls in both villages was the same, 11.1 grams per 100 ml of blood. The incidence of anemia (Hb value below 11g/100ml) was similar in both viltagesr 36.4% for boys and 50% for girls in Siljun Ri and 37.5% for boys and 50% for girls in Soowol Ri. Average hemoglobin values of fertile women were 10.7g% in Siljun Ri and 10.8% in Soowor Ri. The incidences of anemia(Hb valre brlow 12g/100ml) were 100% in Siljun Ri and 86.7% in Soowol Ri. The anemia of these subjects may be caused mainty low intake of good quality protein and iron intake from vegetable food. Recommendation In general, the nutritional status of a community health pilot village is not higher than that of control village due to the lack of nutrition improvement guldance services. Nutrition education should be delivered to the villagers as a main part of the health education artivities. The emphasis should be on building better health through bttter food habits and better food production as well as on preventing malnutrition and diseasrs. It can be an invaluable part of community developnent. Since nutrition is considered to be at least one-half of MCH care, no village or home visits should be made without careful provision for teaching and demoastrating something simple and practical on nutrition. The nurse, midwife, and village health worker should be the chief promoters of nutrition.

• Journal of Preventive Medicine and Public Health
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• 제16권1호
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• pp.163-192
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• 1983

In order to facilitate the Korean government's efforts in integrating family planning and maternal & child health at the primary health care level (or township level), the Soon Chun Hyang College of Medicine, with the financial and technical assistance of WHO, has under-taken a service research project. The project has employed a quasi-experimental study design introducing interventions tat provide crucial factors lacking in the ongoing government programs such as midwives and qualified referral physicians. The study is being conducted in three locations, one control area and two study areas. Before introducing trained Nurse/Midewives into the study areas, a baseline prevalence survey was undertaken from 15 July 1981 to 10 August 1981 in selelcted townships of Seosan County. In this sample survey of bath the study and control areas, 2,484 eligible women (97% reponse rate) were interviewed to obtain benchmark data on basic evaluation indicators related to family planning and maternal and child health. The salients results were summarized as follows.: 1. CONTACT RATES WITH HEALTH WORKERS; During the year preceding the survey, 12% of women were visited by government health workers. The primary reason for such visits by health workers was family planning (45% of the visits). About 34% of the women visited the health centers during the year. The primary reason for visiting health centers was immunizations for their children (45% of the visits). 3. FAMILY PLANNING USE RATE; The baseline data showed little difference between women in the study area and the control area on contraceptive use. Approximately 59% were currently using some methods. However, among those current users, almost half were practicing less effective methods of birth control such as rhythm or withdrawal. Among other methods, the tubectomy was the most popular (16%), while use of the IUD, oral pill and condom together reached only 14%. 3. PRENATAL CARE RATE; About 75% of the women reported no prenatal care for their last births (the youngest child of each women), Additionally, among women received prenatal care, over half had only one visit. 4. ATTENDANCE AT DELIVERY; Most of the women surveyed (over 80%) were attended by a non-medical person during their last delivery. These figures are somewhat comparable to the national figure of 84% for remote areas. 5. POSTNATAL CARE; The proportion of women reporting postnatal care was only 4.5%, and postnatal care was not received by the majority of women surveyed. 6. CHILD HEALTH CARE: In contrast to the low rate of maternity care for women themselves, most women reported obtaining immunization care for their children. About 75% of the women obtained Polio and/or DPT, 58% BCG, and 44% Measles vaccine for their children. However, in terms of illness care, while 35% of the women stated that their youngest child had been sick during the month preceding the survey, only 28% of these women took their child to the clinic for treatment. 7. COMPLICATIONS OF PREGNANCY AND DELIVERY AND ABNORMALITIES IN THE NEWBORN; Among all last deliveries, 18% of the women had pregnancy complications and 9% of the women had complications during delivery About 5% of the women reported abnormality in their most recent newborn. 8. REPRODUCTION EFFICIENCY; PERINATAL MORTALITY AND INFANT MORTALITY Based on data from the pregnancy history in this survey, reproduction efficiency was estimated. Out of the 11,154 pregnancies reported by all women surveyed, foetal loss was 21% (almost 16% were induced abortions) and infant deaths before reaching one year old were 3.1%. The reproduction efficiency was, therefore, reduced to 76%. In terms of perinatal and infant mortality rates, the former was 40.2 per 1,000 total births and the latter was 39.3 per 1,000 live births. Both rates described J shaped relationships with age of mothers and parity, and they were also correlated with birth interval and mother's education. In summary, this baseline survey data indicated a need for (1) improving contraceptive practices with more effective methods to prevent unwanted pregnancies and (2) providing better services for maternal and child care to protect wanted pregancies. In the Korean rural setting. the author believes that the latter is more important as the value of each child has increased as a result of the family planning campaign for the past two decades. This calls for more effective integration of Family Planning and MCH programmes to meet the needs of the family in each stage of the child bearing and rearing period with deploying more qualified personnel than the current government program personnel.

• 농촌의학ㆍ지역보건
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• 제25권2호
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• pp.427-440
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• 2000

농어촌 의료서비스 개선사업의 일환으로 추진된 전라남도 장흥군 장동면과 장편면 2개면 보건지소를 통합하여 보다 수준 높은 통합보건지소를 설치하기 전인 1997년과 통합후인 1999년의 보건의료자원의 변화, 환자진료통계, 보건사업통계를 비교한 결과 다음과 같은 결과를 얻었다. 1. 통합전 보건지소의 시설은 진료실과 보건사업 사무실 등 극히 제한된 시설에 2개 보건지소를 합하여 일반의사 2인, 치과의사 1인, 간호조무사 4인, 치과위생사 1인 이상 8명의 직원이 근무하였으나 통합보건지소는 일반 진료실, 치과진료실 외에도 한방진료실, 소독실, X-선실, 임상병리실, 약국, 물리치료실, 보건사업 사무실이 갖추어진 지하 1층, 지상2층 총 건축면적이 $335m^2$이나 되는 시설을 갖추었고 전문의 l인, 일반의 1인, 치과의 1인, 한의 1인, 간호사 2인, 간호조무사 4인, 임상병리사 1인, 치과위생사 1인, 방사선사 1인, 물리치료사 1인 등 이상 다양한 전문직종이 포함된 14명의 직원이 근무하고 있었다. 2. 통합적인 1997년 1년동안 2개 보건지소의 수입을 합하여 78.815천원이어서 주민1인당 평균 14,000원이었던데 비하여 통합후인 1999년 1년동안 통합보건지소의 수입은 140,376천원으로 주민1인당 평균 25,000원에 해당하였다. 이러한 수입액은 인건비를 제외한 보건지소 운영비로 사용되었으며 의약품비가 가장 많은 비중을 차지하였다. 3. 통합전후 진료사업 통계를 비교한 결과 통합전에는 진료과목으로 일반진료 90.5%, 치과 9.5%이었고 초진 8.4%, 재진 91.6% 이었으나, 통합후에는 진료과목으로 일반진료 71.2%, 치과 10.8%, 한방 16.5%, 임상검사 1.5%의 분포를 보이고 초진 29.7%, 재진 70.3% 이었다. 통합전후 모두 치료받은 질환 종류는 근골격계 질환인 관절염이 가장 많은 빈도를 차지하였으며 한방진료도 요각통으로 가장많은 치료를 받았다. 통합전에는 치과진료로 매복치 및 매몰치가 가장 흔한 문제였으나 통합후는 치수염이 가장 빈도가 많은 문제이었다. 치료가 1인당 월평균 치료비는 통합전에는 9,363원이었으나 통합후에는 8,309원이었다. 6. 통합전후 대상인구당 보건사업 실시율을 분석한 결과 독거노인관리, 고혈압관리, 당뇨 환자관리, 임부등록에서는 통합후에 통합전보다 다소 감소하였지만 그 외 대부분의 만성질환자에 대한 방문보건사업, 모자보건사업, 예방접종 사업량은 정체되거나 약간 증가되는 경향을 보였다. 이상을 보면 통합전 2개 보건지소에 비하여 통합보건지소는 시설, 규모, 조직, 예산이 방대해져서 진료환자수는 증가하였으나 1인당 진료 단가는 다소 감소하였다. 예방 보건사업은 일부 사업량은 증가하였으나 일부 사업은 감소하였다. 통합보건지소가 소기의 목적을 달성하기 위해서는 2개면 전체주민을 위한 보건의료사업 활성화를 위한 보다 많은 노력이 요구되며 계속적인 평가도 필요하다.

• 한국식품영양과학회지
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• 제39권2호
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• pp.244-252
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• 2010

본 연구는 충북 도내에 거주하는 남녀 중학생 282명을 대상으로 24시간회상법을 이용하여 식이섬유 섭취 수준을 조사하고 식이섬유 주요급원식품을 알아보았다. 또한 식품섭취빈도조사를 이용하여 조사방법 간의 식이섬유 섭취수준을 비교, 분석하고 식이섬유섭취수준의 타당도를 검증하고자 하였다. 본 연구의 결과를 요약하면 다음과 같다. 조사대상자의 성별에 따른 열량 및 영양소 섭취량은 에너지필요추정량과 비교할 때 남학생은 75.4%, 여학생은 93.8%였다. 단백질은 평균필요량의 남녀 각각 85.8% 및 102.6%의 섭취수준을 보이며 남학생의 경우 다소 부족한 결과를 나타내었다. 한국인 영양섭취기준의 평균필요량이 남녀학생 모두 낮은 섭취량을 보인 영양소는 칼슘, 철분 및 엽산 순이다. 전반적으로 남녀학생 모두 영양소의 섭취수준이 낮은 것으로 나타났다. 24시간회상법에 의한 남학생의 1일 평균 식이섬유 섭취량은 $17.6\pm5.3$ g(54.8%), 여학생은 $16.5\pm4.8$ g(68.8%)으로 나타났으며 남녀학생 모두 충분섭취량에 매우 부족한 상태로 남녀학생의 유의적인 차이는 없었다. 식이섬유의 주요 급원식품 중 두 방법 간의 공통적인 섭취순위를 보인 식품은 1위 백미, 2위 배추김치이며 채소류와 곡류로부터 총 식이섬유의 68.44%의 섭취를 보였고 주요급원식품군별로 분류하면 채소류, 곡류와 그 제품, 과일류, 두류, 해조류 순이었다. 24시간회상법과 식품섭취빈도조사법 간의 Pearson 상관계수는 0.71로 높게 나타났으며, 유의적인 상관성(p<0.05)을 보였다. 백미가 0.82로 가장 높은 상관성을 보였고, 19종의 식품품목이 상관관계에서 유의성을 보였다. 식이섬유 섭취량의 Pearson 상관계수가 낮고 유의성이 없는 식품을 제외한 후 섭취량을 보정한 결과 상관성이 0.78로 높게 나타났고 유의적인 상관성(p<0.01)을 보였다. 두 방법에 의해 산출된 섭취수준에 따라 각각 4등급으로 분류하였을 때 보정 후 낮은 등급이 일치할 확률이 90.2%에서 92.4%로 높아졌고 평균 식이섬유의 Kappa값은 0.54에서 0.59로 높아졌다. 따라서 본 연구에서 개발된 식품섭취빈도 조사지는 비교적 높은 타당성을 보였으므로 조사지의 수정보완을 통해 청소년의 식이섬유섭취상태 파악에 유용하리라 생각된다. 또한 섭취량 보정을 통해 선정된 식품품목 19종을 기초로 하여 학생들의 학교급식메뉴와 기호도를 조사하고 급식과 연계하여 식품품목을 증가시키기 위한 과정이 선행되어야 할 것이다. 따라서 식품섭취조사지의 개발과 적극적인 활용방안을 위해서는 지속적인 연구가 필요하리라 사료된다.

• 한국환경보건학회지
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• 제44권3호
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• pp.238-243
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• 2018

Objectives: The purpose of this study was to determine skin adhesion rate of children's modeling clay for exposure assessment. Methods: Children's modeling clays were classified into 10 categories as PVA clay, PVA soft clay, starch-based clay, foam clay, rubber clay, oil clay, muddy clay, terra clay, paper clay and slime. A total of 26 children's clay goods was selected. Moisture content (%) and hardness of clays were measured. Five adults aged 20 to 25were recruited for experiment. Gravimetric difference of modeling clay was determined after 3 minutes playing time. Skin adhesion rate ($g/min/cm^2$) was estimated bythe amount of skin adhesion per minute (g/min) and each individual's palm surface area ($cm^2$). Results: Twenty four of the 26 children's modeling clay products were adhesive to skins. Two products of foam and rubber clay were not adhered to skin. For the 24 products, the average skin adhesion rate was $5.5{\times}10^{-4}{\pm}4.0{\times}10^{-4}g/min/cm^2$. The highest skin adhesion rate was $1.3{\times}10^{-3}{\pm}4.4{\times}10^{-4}g/min/cm^2$ for paper clay. The lowest skin adhesion rate was $4.6{\times}10^{-5}{\pm}1.1{\times}10^{-4}g/min/cm^2$ for oil clay. The skin adhesion rate was increased with increase of moisture content. Adhesion rates of some clays were varied by person and testing trials. Conclusion: The study determined skin adhesion rate of children's modeling clay. The adhesion rate is useful for exposure and risk assessments and setting safety guideline to protect children's health.

• Parasites, Hosts and Diseases
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• 제38권2호
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• pp.51-57
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• 2000

Follow-up studies have been conducted every three years on the endemicity of Gymnophalloides seoi infection in a small coastal village of Chollanam-do (Province), Korea, since it was first known as an endemic area in 1994. Special attention was given to its egg laying capacity in the human host. In fecal examinations, the overall helminth egg and/or cyst positive rate was 78.7% (74/94) in 1997 and 76.6% (82/107) in 2000. Among them G. seoi eggs showed the highest rate; 71.3% (67/94) in 1997 and 72.0% (77/107) in 2000. The average number of eggs per gram of feces (EPG) was 1,015 in 1997, while a reduced rate of 353 was observed in 2000. In 1997, total of 320,677 adult flukes of G. seoi (av. 10,344/person, 94-69,125 in range) were collected from the diarrheic stools of 31 treated patients. The EPG/worm obtained from 21 cases ranged from 0.04 to 0.77 (av. 0.23), suggesting density-dependent constraints on the worm fecundity. The relationship between the worm burden (X) and EPG/worm (Y) can be expressed as $Y=0.42{\cdot}e{\cdot}^{-l.2x}(r=0.49)$. The results showed that G. seoi infection is persistently endemic in this village.