• 제목/요약/키워드: case-controlled study

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대학 강의평가 영향력 요인 중 학생 특성의 효과에 대한 사례 연구 (A Case Study on the Effect of Student Characteristics among the Influential Factors in the Teaching Evaluation at Universities)

  • 조수선
    • 공학교육연구
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    • 제19권6호
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    • pp.38-43
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    • 2016
  • This paper deals with the effect of student characteristics from a case study on the different teaching evaluation scores under the same conditions of professor and course characteristics. In particular, focusing the evaluation score gabs caused by different course achievements of two classes, we can analyze the influence of the student characteristics and interpret the meaning. This case study shows that the student characteristics can lead out a distinct difference in the teaching evaluation scores under the most factors related to professors and courses are controlled, In conclusion, this case study could be appropriately used to support the interpretation of the student characteristic hypothesis among several hypotheses about the meaning of correlations between student achievement and teaching evaluation.

악교정 수술후 자가통증조절장치(Patient-Controlled Analgesia)의 사용 효과에 관한 연구 (A CLINICAL STUDY ON THE EFFECTIVENESS OF PATIENT-CONTROLLED ANALGESIA(PCA) AFTER ORTHOGNATHIC SURGERY.)

  • 양병은;송상훈;엄기훈;유준영
    • Maxillofacial Plastic and Reconstructive Surgery
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    • 제21권4호
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    • pp.382-387
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    • 1999
  • The concept of PCA(Patient Controlled Analgesia) was first described in 1968, by Sechzer. The earliest descriptions of actual self-administered PCA machines were by Forrest et al. In gastric bypass surgery, cesarian section, orthopedic surgery etc, PCA is widely used in the control of postoperative pain. Previous Studies have shown that PCA provides effective pain-control for the postoperative patient. The postoperative pain-control is a problem that should be solved in surgery. Especially in orthognathic surgery, it is not same as in the case of maxillofacial trauma surgery or of tumor surgery: most orthognathic surgery patients are under operation not accustomed to pains, and difficulties in pain-complaint due to IMF(Intermaxillary fixation), postoperative nausea, and vomiting are additional problem. In this study, we have compared PCA and IM analgesics with respect not only to time request but also to the quality of postoperative pain control.

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어깨 충돌증후군의 침치료에 관한 연구 동향 (Research Trends on the Acupuncture Treatment of Shoulder Impingement Syndrome)

  • 윤광식
    • 동의생리병리학회지
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    • 제32권5호
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    • pp.315-320
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    • 2018
  • The purpose of this study is to investigate reasearch trend of acupuncture treatment on shoulder impingement syndrome. This study investigated the recent studies about acupuncture treatment for shoulder impingement syndrome via searching Korean and foreign electronic databases(Research Information Services, National Digital Science Library, Oriental Medicine Advanced Searching Integated Services, PubMed, China National Knowledge Infrastructure). The search term was searched by combining 'shoulder impingement sydrome', 'subacrominal pain', 'acupuncture', 'needle therapy', and was limited to the articles published from 2005 to 2017. 14 studies were found to be analyzed according to the type of study, the number of cases, the type of treatment, the instruments for assessment and published year. 14 studies were published since 2005, 6 case reports, 8 randomized controlled trials. In the treatment of shoulder impingement syndrome, treatments such as acupuncture, acupotomy, pharmacopuncture, laser acupuncture, combined treatment of exercise and rehabilitation were performed. Visual analogue scale(VAS), range of motion(ROM) and various questionnaires were used as primary assessments. In each study, acupuncture treatment was reported to have a significant effect in the pain, range of motion and disability of shoulder impingement syndrome. In order to ensure objective evidence on acupuncture treatment, large scale case reports and randomized controlled trials should be continued.

성형외과 영역에서 임상증례군 보고 형식의 논문 작성 가이드 (A Guide to Designing a Case Series in Plastic Surgery)

  • 김태곤;김일국
    • 대한두개안면성형외과학회지
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    • 제13권1호
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    • pp.1-3
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    • 2012
  • The case series is a descriptive study that follows a group of patients who have a similar diagnosis or who are undergoing the same procedure and is the most prevalent type of research in the field of plastic surgery. Results of case series can generate hypotheses that are useful in designing further studies, including randomized controlled trials or a prospective cohort study. However, no causal inferences should be made from case series regarding the efficacy of the investigated treatment. The authors provide a guide to the design and report on the case series.

Dexmedetomidine intravenous sedation using a patient-controlled sedation infusion pump: a case report

  • Chi, Seong In;Kim, Hyun Jeong;Seo, Kwang-Suk
    • Journal of Dental Anesthesia and Pain Medicine
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    • 제16권1호
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    • pp.55-59
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    • 2016
  • Dental treatment under sedation requires various sedation depths depending on the invasiveness of the procedure and patient drug sensitivity. Inappropriate sedation depth may cause patient discomfort or endangerment. For these reasons, patient-controlled sedation (PCS) pumps are commonly used. Patients are able to control the sedation depths themselves by pushing the demand button after the practitioner sets up the bolus dose and lock-out time. Dexmedetomidine is an ${\alpha}$-2 adrenoreceptor agonist with sedative, analgesic, and anxiolytic properties. It has been widely used for sedation for its minimal respiratory depression; however, there are few studies on PCS using dexmedetomidine. This study assessed the applicability of dexmedetomidine to PCS.

강성개폐식 대공간 지붕의 개폐 관리풍속 사례 분석 (A Case Study of Retraction Controlled Wind Velocity on the Steel Retractable Roof of Large Span)

  • 송진영;윤성원
    • 한국공간구조학회논문집
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    • 제18권1호
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    • pp.93-100
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    • 2018
  • The retractable roof structures have actions of various types of loads and external forces depending on the retraction and operation conditions of the roof in terms of efficiency of control and maintenance as the aspect of structural plan. In particular, there is a need for studies on the establishment of retraction controlled wind velocity to maintain the stable control and usability of roof structure against strong winds or sudden gusts during the retraction of the roof. In this paper, it was intended to provide basic materials for the development of guidelines on the operation and maintenance of domestic retractable buildings with large space by analyzing the factors affecting the retraction controlled wind velocity for the overseas stadiums with the large spatial retractable roof structures where the sliding system was applied on the steel retractable systems. As a result, the controlled wind velocity tends to decrease as the retractable roof area increases. On the other hand, the controlled wind velocity tends to increase as the retraction time increases. In addition, in the space-grid roof structures, the spherical roof structures type showed the average controlled wind velocity of 10m/sec lower than that of 17.3m/sec for curved-roof structure type, and in the curved-roof structure type, the truss roof structure showed the average controlled wind velocity of 8.9m/sec which is lower than that of 17.3m/sec for the space for the space-grid roof structure.

안면마비의 테이핑 요법에 대한 임상 연구 동향 (Clinical Research Trend for Taping Therapy on Facial Palsy)

  • 이규영
    • 한방안이비인후피부과학회지
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    • 제36권4호
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    • pp.70-87
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    • 2023
  • Objectives : The purpose of this research is to review the efficacy and safety of taping therapy for facial palsy. Methods : Two foreign databases(Pubmed, CNKI) and one domestic database(OASIS) were used to search, and papers retrieved from the starting point of literature provision in each database until June 19, 2023 were included in the study. All studies in which other treatments were performed as a treatment intervention along with taping therapy were included, but cases where taping therapy was a comparative intervention were excluded. Results : 18 studies were selected. 14 studies were two-arm randomized controlled trials(RCT), and 4 studies were case reports. There was improvement in facial palsy in all 4 case reports, and in all 14 RCTs, the treatment effect in the observation group was significantly higher than in the control group. Conclusions : Taping therapy can be an effective and safe treatment method for facial palsy. However, the risk of bias in the selected studies was high, and there were many cases in which multiple interventions other than taping therapy were applied simultaneously. Therefore, well-designed studies with high quality are needed in the future.

Exploring Study Designs for Evaluation of Interventions Aimed to Reduce Occupational Diseases and Injuries

  • van der Molen, Henk F.;Stocks, Susan J.;Frings-Dresen, Monique H.W.
    • Safety and Health at Work
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    • 제7권1호
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    • pp.83-85
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    • 2016
  • Effective interventions to reduce work-related exposures are available for many types of work-related diseases or injuries. However, knowledge of the impact of these interventions on injury or disease outcomes is scarce due to practical and methodological reasons. Study designs are considered for the evaluation of occupational health interventions on occupational disease or injury. Latency and frequency of occurrence of the health outcomes are two important features when designing an evaluation study with occupational disease or occupational injury as an outcome measure. Controlled evaluation studies-giving strong indications for an intervention effect-seem more suitable for more frequently occurring injuries or diseases. Uncontrolled evaluation time or case series studies are an option for evaluating less frequently occurring injuries or diseases. Interrupted time series offer alternatives to experimental randomized controlled trials to give an insight into the effectiveness of preventive actions in the work setting to decision and policy makers.

불임 남성의 정자 상태 개선에 대한 침구 치료 효과 : 리뷰 (The Effectiveness and Safety of Acupuncture and Moxibustion for Poor Semen Quality in Male Infertility : A Review)

  • 조준영;황덕상;장준복;이진무;이창훈
    • 대한한방부인과학회지
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    • 제27권1호
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    • pp.176-184
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    • 2014
  • Objectives: The purpose of this study is to understand current situation of acupuncture and moxibustion for male infertility. Methods: We searched all relevant studies of male infertility patients treated with acupuncture and moxibustion. Electronic searches were conducted in Pubmed, the Cochrane Library, EMBASE and 4 Korean databases until October 2013. Results: A total of 10 reports were included in the review. Two case reports, one case series, three before and after studies, one cohort study, one non-randomized controlled study and two randomized controlled studies were reviewed. Although the majority of studies suggested a positive effect of acupuncture on male infertility, the quality of studies was low. Data on adverse effects were lacking. Conclusions: We found a benefit from acupuncture for poor semen quality in male infertility. These findings should be treated with caution as the evidence was low or very low quality. To further evaluate the effects of acupuncture and moxibustion in male infertility, well-designed randomized controlled studies are needed.

음부-골반통/삽입질환에 대한 중의학 임상연구 동향 (Review of Clinical Studies of Traditional Chinese Medicine on Genito-Pelvic Pain/Penetration Disorder in Women)

  • 남은영
    • 대한한방부인과학회지
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    • 제32권3호
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    • pp.214-226
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    • 2019
  • Objectives: The purpose of this study is to review clinical studies of Traditional Chinese medicine (TCM) on Genito-Pelvic Pain/Penetration Disorder (GPPPD) in women. Methods: Key words "Dyspareunia", "Vaginismus" were searched on Chinese National Knowledge Infrastructure Database (CNKI) on April 21th 2019. Results: 2 case reports and 7 clinical trials were collected in accordance with the selection and exclusion criteria. Among the 7 trials, 4 were controlled trials, and 3 were single-arm trials. The types of intervention were herb medication in 8 studies, and compound TCM treatment including acupuncture, moxibustion, and cupping therapy in 1 study. All 4 controlled trials were about dyspareunia and conducted by herbal medicine of TCM. The study results and methods of intervention were analyzed. Conclusions: 2 case reports described the effectiveness of compound TCM treatments (acupuncture, moxibustion, cupping therapy) and herb medicine in dyspareunia. In 4 controlled trials, 2 trials described the effectiveness of herb medicine (oral or vaginal agent) compared to western treatment in dyspareunia, and other 2 trials described no effectiveness of herbal enema compared to danazol. In 3 single-arm trials, 1 trial of dyspareunia and 2 trials of vaginismus described the effectiveness of herb medicine. All the 9 selected studies reported improved or disappeared symptoms of GPPPD, or high effective rate after TCM treatment. There was limitation that the selected studies were retrieved from only one site of CNKI, and generalized results could not be derived, further studies should be carried out. Additional well-designed clinical studies on GPPPD in women are needed in Korea.