• 제목/요약/키워드: stratified sampling

검색결과 611건 처리시간 0.027초

일 도시 고등학생의 음주동기와 음주문제 (Drinking Motives and Drinking-Related Problems among Korean High School Students)

  • 강혜영;신경은;장현지;나영화;조은희
    • 한국학교보건학회지
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    • 제17권2호
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    • pp.85-96
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    • 2004
  • Purpose: The purpose of this study was to investigate drinking motives and the drinking-related problems of Korean high school students at a city in Jeonbuk province. Methods: There were 657 students from two academic and two vocational high schools at J city in Jeonbuk province. The sample was collected using a stratified sampling method and the data was collected from June 30th to July 16th 2003. The study instrument used to examine drinking motive was a 20-item summated scale (Cronbach's ${\alpha}$ = .95) and for drinking-related problems was an 18 item summated scale (Cronbach's ${\alpha}$ = .91). The data was analyzed using SPSS/PC+ by percentage, x2-test, t-test and correlations. Results: 1. Drinking experience: Among the high school students, 74.3% of them had drinking episodes. Female students started drinking later (x2 = 12.857, p = .002) and had more drinking friends (x2 = 7.785, p = .020) than males. Vocational school students drank more frequently (x2 = 32.138, p = .001), had more heavy drinking episodes (x2 = 40.370, p = .001). 2. Drinking motives & Drinking-related problems: The mean score of drinking motives was $31.2{\pm}11.12$ out of 80 and that of drinking-related problems was $21.8{\pm}5.85$ out of 72 points. Neither score were stronger was significantly different according to gender and grade. On the other hand, both drinking motives (t = -4.077, p = .001) and drinking-related problems (t = -3.423, p = .001) were stronger in vocational school students than in academic school students. The correlation between drinking-related characteristics and problems were weak (from r = .286 to r = .520) but the correlation within the subcategories of drinking motives was high such as between enhancement and coping (r = .822) and enhancement and social motives (r = .822). Conclusion: The majority of Korean high school students start to drink during their junior high school days. Drinking motives and drinking-related problems were not serious but the drinking motives and the drinking-related problems are stronger among vocational school students. As a result, school-based health education and counseling programs should focus on solving drinking motives than on drinking-related problems.

비모수추정법에 의한 부산시 가정용수 수질개선에 대한 지불의사액 추정 (Estimating Willingness to Pay for the Tap Water Quality Improvement in Busan Using Nonparametric Approach)

  • 표희동;박철형;추재욱
    • 한국수자원학회논문집
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    • 제44권2호
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    • pp.125-134
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    • 2011
  • 이 논문은 비모수추정법에 의한 조건부가치측정법을 이용하여 부산시 가정용수 수질개선에 대한 지불의사액을 추정하는 것이다. 이와 같은 연구는 생활용수를 관리하는 정책입안자들에게 수질개선에 따른 경제적 편익의 정보를 제공하고, 부산시의 생활용수 개선사업을 수행여부나 수행규모를 결정하는데 있어서 유용한 정보와 시사점을 제공할 수 있다. 비모수추정법은 모수추정법에서 가정되는 모형분포의 적합도, 모형설정, 이분산 등의 가정과 검정이 필요 없을 뿐만 아니라 비교적 추정이 용이하고 보수적 추정을 할 수 있는 장점이 있다. 이 논문은 조건부가치측정법의 신뢰성과 타당성을 확보하기 위해서 층화된 무작위표본추출법에 의한 개인면접방법을 통하여 665개의 표본을 선정하였다. 추정결과 가정용수 수질개선에 대한 부산시 가구당 월 평균 지불의사액은 2009년 기준 3,190원에서 3,331원이고, 중앙값은 가구당 월 1,750원으로 추정되었다. 부산시민 전체의 가정용수 수질개선에 대한 연간 경제적 편익은 평균WTP를 적용할 경우 502억원, 중앙값 WTP를 적용할 경우 275억원으로 추산되었다. 이와 같은 연구결과는 상수도 수질정책의 시행여부를 결정하는 비용편익분석이나 다양한 생활용수 수질개선정책에 있어서 편익의 유용한 정보로 활용할 수 있다.

한의원의 경영 현황과 정책 인식도에 대한 조사 연구 (Survey on the current status of the management of traditional Korean medical clinics and perception of the policies)

  • 박요한;강병갑;신현규
    • 대한한의진단학회지
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    • 제18권3호
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    • pp.205-216
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    • 2014
  • Objectives The purpose of this study is to help improve the management of traditional Korean medical(TKM) clinics and the policies for supporting them, by conducting a survey of the practitioners of TKM. Methods Stratified sampling was conducted based on regional location, and 700 samples were selected in a random manner from the membership list. The questionnaire was delivered and returned by mail. The survey was conducted between 20 July and 31 August 2010. A total of 177 questionnaires (recovery rate: 25.28%) were recovered and analyzed for the study. Results 1. The the survey indicate that the overall size of TKM clinics has fallen compared with previous survey, while the average number of beds per clinic has remained unchanged at 7.9. The sale of medicine as a proportion of total monthly sales has increased. 2. There has been no change in the composition of clinical staff as there are three nursing assistants. Although the average daily number of patients to clinics has remained at around 33.90 compared with ten years ago, the number of patients requiring seeking acupuncture treatment has increased while the number of those treated with medication has decreased. 3. Clinicians in TKM have indicated their preference for a binary system that separates TKM from western medicine (57.4%). The respondents do not favor the separation of dispensary from medical practice (81.5%), marks of origin for medicinal herbs (68.9%), disclosure of the prescriptions (67.2%), and the overseas expansion of Korean medical services (70.4%). However, they indicated that they are very much in favor of being granted the authority to employ and give orders to medical technicians (96.0%). 4. The respondents selected Korea as the country that maintains a proper academic system for traditional medicine (45.5%), and are not in favor of opening Korea's traditional medicine market under an Free Trade Agreement(FTA) with China (72.7%). Conclusion The overall status of the management of TKM clinics has declined compared with the preceding decade. There has been only a slight change in clinicians' opinion of the related policies and regulatory issues.

오적산의 치료 효과 평가에 활용될 변증 설문지 개발을 위한 타당성 문항 추출 연구 (Selection of Adequate Indicators for the Development of a Questionnaire to Evaluate the Effects of Ojeock-san)

  • 이승덕;김은정;정찬영;신경민;장민기;윤은혜;황지후;김선웅;김갑성
    • 대한한의학회지
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    • 제31권4호
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    • pp.101-114
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    • 2010
  • Background: Currently, evidence-based medicine is widely propagated as a reference for proper clinical practice. As a result, there is an increasing need for more clinical trials based on Oriental diagnostic methods to evaluate the efficacy of Oriental medicine, including acupuncture and herbal medicine. The purpose of this study was to confirm which symptoms are adequate indicators of effects of Ojeock-san for lower back pain and develop a questionnaire to evaluate its effects. Methods: We interviewed 102 Oriental medical doctors working in Seoul with a preformed questionnaire which included questions about symptoms of lower back pain and indicators for Ojeock-san. We sampled respondents who answered that they trust the effectiveness of Ojeock-san in telephone survey carried out using multistage stratified random sampling technique from March to April, 2009. We categorized the respondents into two groups, differentiating them by gender, career, workplace, and trust level of Ojeock-san effect. Results: About half of the respondents selected 13 questions as the adequate indicators of Ojeock-san for low back pain. There were no differences in the top 11 selected indicators in total selection and top 3 ranking selection. The comparison of frequency of top 13 questions in total selections between the two groups showed no difference. Conclusions: There were 13 symptoms which were considered adequate indicators of effects of Ojeock-san for lower back pain found by many Oriental medical doctors. This questionnaire can be utilized as a diagnostic adjunctive tool, tested for validity and reliability of questionnaires through further studies.

부산지역 거주 노인의 인지기능장애 및 치매 유병률 (Prevalence Rate of Cognitive Impairment and Dementia Among the Elderly in Busan)

  • 김정순;이수일;정영인;황인경;이봉숙;김민정;초의수;전진호;정인숙
    • Journal of Preventive Medicine and Public Health
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    • 제36권1호
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    • pp.63-70
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    • 2003
  • Objectives : To investigate the prevalence of cognitive impairment and dementia in elderly people, aged 65 or above, residing in Busan Metropolitan City. Methods : Total of 1,101 old people, aged 65 or above, living in Busan as of December 31, 2001 were selected using stratified three-stage cluster sampling. Cognitive impairment was determined from the MMSE-K score, and dementia confirmed from five psychometric measures and the Barthel index. The crude prevalence, sex-age adjusted for the Korean population, were obtained. Results : With the cut-off point for cognitive impairment was set at 24 points, or below, on the MMSE-K scale, the crude rate of cognitive impairment was 29.3% (15.7% for men and 37.5% for women), and the sex-age adjusted prevalence was 30.5% (17.5% for men and 37.0% for women). When the cut-off point for cognitive impairment was set at 20 points, or below, on the MMSE-K scale, the crude rate of cognitive impairments were 10.0% (4.1% for men and 13.5% for women), and 10.6% (4.7% for men and 13.1% for women), respectively. The crude dementia, and the sex-age adjusted rates were 7.4% (2.4% for men and 10.5% for women), and 8.0% (2.7% for men and 10.0% for women), respectively. Conclusions : The prevalence of dementia in this study was somewhat lower than that reported by other domestic and foreign studies. Our results related to the difference in time and space, diagnostic tools, response rates, and distribution of male and female subjects, etc.

2009 개정 과학과 교육과정의 과학 선택 과목에 대한 고등학생의 인식 조사 (High School Students' Perceptions on Science Elective of the 2009 Revised Curriculum)

  • 심재호;박현주;이준기
    • 과학교육연구지
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    • 제39권2호
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    • pp.133-150
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    • 2015
  • 이 연구의 목적은 2009 개정 고등학교 과학과 선택 교육과정에 대한 고등학생들의 인식을 조사하는 것이다. 이를 위해, 13문항의 설문지를 구성하고, 비례층화표집된 전국 126개 고등학교의 911명의 고등학생들이 온라인 설문에 참여하였다. 설문조사에 참여한 학생들은 교육과정 실행 실태와 관련하여 개인적인 적합성과 학문적인 적합성을 알아보는 13개의 문항으로 구성된 설문지에 응답하였다. 설문지의 응답결과를 분석한 결과는 다음과 같다. 첫째, 과학과 선택과목I과 II 사이에 학습량, 심도, 난이도 등에서 편차가 존재함을 알 수 있었다. 둘째, '과학' 과목은 소양 증진을 위한 과목임에도 불구하고 물리II, 물리I 다음으로 어렵게 생각하고 있는 것으로 조사되었다. 뿐만 아니라 과학 과목이 의사소통을 증진시키는 기능도 크지 않다는 것을 알 수 있었다. 과학과 선택 과목에 대한 흥미정도를 분석한 결과를 보면, 어렵거나 외워야 할 내용이 많기 때문에 '과목에 대한 흥미가 없다'고 판단할 수는 없음을 알 수 있었다. 이 연구결과들은 통해 차기 고등학교 과학과 교육과정 및 교과서 개선을 위한 시사점 제공에 유용하게 활용될 수 있을 것이다.

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냉장육 소비전력을 위한 소비자 외식 기호도 연구 -서울, 경기지역을 중심으로- (A study on the Dining-out preference and behavior of consumers for the chilled meat consumption strategy in Seoul-Kyunggi Area)

  • 배영희;황대하
    • 한국식생활문화학회지
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    • 제13권3호
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    • pp.169-182
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    • 1998
  • This study was conducted to investigate the consumers' Dining-out preference and behavior for the chilled meat consumption strategy . A total of 328 persons in Seoul, Kyunggi areas were selected by stratified random sampling method and were responded to this study questionnaire which was composed of six parts with 65 statements about chilled meat consumption. 1. The frequency of Dining-out is characterized that 'once a month' is the highest pattern of consumers(46.3%) : In that cases, the married people showed 'once a month'(52.7%) and 'once biweekly'(23.3%), but the unmarried people showed the more frequent pattern as 'once a week'(27.3%) and 'twice a week'(27.3%). And the frequency of Dining-out in relation with the education level revealed that 'the graduate people' are the highest (37.5%). 2. Generally the first food for the Dining-out is 'Kalbi'(26.2%), and the others were 'pork grilling','chilled meat grilling','fish sasimi','chinese foods','pizza' etc.... But there were some variation in relation with incomes and housing types: For the agriculture/physical labor class, they prefers the 'pork griling'(25.0%), the office work class prefers the 'Kalbi' For the house-owner group, they prefers the 'Kalbi', but the house-renting/lodging group, they prefer the 'chinese food' or 'pork grilling' etc.... 3. In choosing the Dining-out place,'quality of food'(54.3%) and 'hygiene'(21.0%) were rated as the first important factor. 4.'Soups', 'Noodles' and 'Cooked rice in casserole' were chosen as good lunch menu : for male, they prefer the 'Soups', but females prefer 'Cooked rice in casserole'. 5. People with commercials/services(44.7%) and agriculture/physical labor(50.0%) ate their lunch in private restaurant, but peoples in the office work(57.0%)/public service personnel(70.4%) and industry use refectory; and it showed significant difference. 6. Consumers prefer the chilled meat as a Dining-out menu, but they didn't recognize the difference between chilled meat and frozen meat 7. For Dining-out menu, many people proper the beef, but the price of beef was so high than pork, agriculture/physical labor class choose the pork grilling instead of beef : commercials/services/office worker prefer the beef chilled meat . 8. The first admirable cooking method for chilled meat is direct radiation grilling with charcoal and many of consumers prefer tender, marbling, some chewy and juicy, flavor, soft as a quality of meat but physical labor class prefer the some tough and chewy texture.

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병원근무 전문의 소득에 영향을 미치는 요인분석 (Analysis of influencing factors on hospital-employed physician's income)

  • 박웅섭;김한중;손명세;박은철
    • 보건행정학회지
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    • 제9권3호
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    • pp.1-20
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    • 1999
  • This study reviews the literature of influencing factor on hospital-employed physician's income, and it describes general distribution of hospital-employed physician's income, and analyzes influencing factor of hospital-employed physician's income. A total of 1.795 persons responded to the mail survey. through stratified sampling by 23 branches of medical society in Korean RBRVS study. The design of the study is cross sectional study. and the unit of analysis is a physician. To examine the change of average income per month. multiple regression was used to test the change according to physician's characteristics. demographic characteristics. scale of hospital. average intensity of ordinary work. and specialty. The major findings of this study are as follows; 1. As for physicians working in first referral hospital. the average income of neurosurgeon per month was the largest. being 1.34 times larger than that of the family physician, and that of the emergency physician was the smallest, being 0.78 times smaller than that of the family physician, but that of the ophthalmic and Orthopaedic physician was significantly larger than that of the family physician under the control of control variables. And average income per month was significantly larger for physicians who worked in Seoul metropolitan area than physicians who worked in rural area. 2. The year of physician's career, number of average out-patients per month significantly positively associated, but the number of hospital beds and average intensity of therapy significantly negatively associated with average income per month. 3. As for physicians working in second referral hospital. the average income of the psychiatric physician per month was the largest, being 1.33 times larger than that of the family physician, and that of the emergency physician was smallest, being 0.74 times smaller than that of the family physician., but no significant difference was seen under the control of control variables, and average income per month was significantly larger for physicians who worked in Seoul metropolitan area than physicians who worked in large municipal area. 4. The year of physician's career and number of hospital beds significantly positively associated, but average working hours per month significantly negatively associated with average income per month. In conclusion, the year of hospital-employed physician's career is the largest influencing factor on hospital-employed physicians. But the difference of average income per month according to working regions and to number of hospital beds existed in employed physicians under the control of control variables. So this study has implementation that we must consider the influence of working regions and the number of hospital beds on the income of hospital-employed physicians in making policy for hospital. Being a cross-sectional study, this study can not suggest causal explanations. In the future, experiment or cohort study is needed for causal explanations.

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민간경비원의 여가동기와 스포츠 참가의 관계 (Relationship between Leisure Motivation of Private Guards and Sports Participation)

  • 안황권;김평수;김찬선
    • 한국콘텐츠학회논문지
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    • 제8권3호
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    • pp.225-233
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    • 2008
  • 본 연구의 목적은 민간경비원의 여가동기와 스포츠 참가의 관계를 알아보고 변수간의 인과관계를 검증하여 민간경비원들에게 여가활동의 필요성과 정책적 자료를 제시하는데 그 목적이 있다. 연구대상은 2007년 서울소재 5개소 민간경비회사에 재직하고 있는 민간경비원을 연구대상으로 유층집락무선표집법을 이용해 193명을 표집하였다. 설문지의 신뢰도는 Cronbach's ${\alpha}$ 값이 .835이상으로 나타났다. 이 연구에서는 설문지의 신뢰도분석과 상관분석을 위해 SPSSWIN 15.0 프로그램을 활용하였다. 이상과 같은 연구방법 및 절차를 통해 이 연구에서 도출한 결론은 다음과 같다. 첫째, 여가동기는 스포츠 참가경험에 영향을 미친다. 즉, 휴식적 동기가 증가하면 스포츠 참가경험은 감소한다. 둘째, 여가동기는 스포츠 참가의 정도에 영향을 미친다. 즉, 유능감인지 동기가 증가할수록 스포츠 참가빈도는 증가한다. 지적 동기가 증가할수록 스포츠참가기간은 증가한다. 또한, 휴식적 동기가 증가할수록 스포츠 참가강도는 낮아지는 반면, 유능감인지 동기가 증가하면 스포츠 참가강도는 증가한다.

치과위생사의 노후생활 준비 (Preparation for Old Age Life of Dental Hygienists)

  • 김민영;김선주;김지현
    • 한국콘텐츠학회논문지
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    • 제14권8호
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    • pp.250-256
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    • 2014
  • 본 연구는 치과의료기관에서 근무하는 치과위생사를 대상으로 그들의 안정적 노후생활준비의 필요성을 인식시키고, 노후생활준비에 대하여 조사하여 사회적 지원 방향을 모색하고자 실시하였다. 층화추출법으로 표본 추출된 1,560개소 치과의료기관의 치과위생사에게 우편으로 설문지를 발송하여 자기기입에 의한 단면조사를 실시하였다. 노후생활에서 걱정되는 문제점에 대한 결과 '경제'라고 응답한 비율이 가장 높게 나타났다. 경제적 노후준비를 하고 있는 비율이 84.3%로 높게 나타났고, 그 방법으로는 '정기예금 및 적금'이 62.6%로 가장 높았다. 경제적 노후준비 만족도는 평균 2.60으로 불만족하고 있는 것으로 나타났다. 노후생활을 위한 신체적 준비의 평균점수는 2.97, 정서적 준비는 3.59, 여가준비는 2.56으로 낮게 나타났다. 결론적으로 우리나라 치과위생사의 노후생활을 위한 경제적 준비 만족도는 낮았고, 신체적, 정서적 및 여가 준비정도 또한 낮게 나타나 30대부터 노후생활준비를 계획하여야 할 것으로 사료된다. 또한 이를 위해 대한치과위생사협회에서는 적극적으로 이들의 은퇴 후 노후생활을 위한 교육, 정책, 제도 등 각종 프로그램을 개발해야 한다.