• 제목/요약/키워드: Risk of bias

검색결과 811건 처리시간 0.026초

뇌졸중 후 우울증 : 한방 치료에 대한 국내외 최신 문헌 고찰 (Poststroke Depression : A Review of the Latest Oriental Medicine Articles)

  • 이제원;이보매나;장우석;황하연;백경민
    • 대한한방내과학회지
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    • 제33권4호
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    • pp.448-464
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    • 2012
  • Objectives : This study reviews the latest articles in Korea and other countries that studied oriental medicine treatment on poststroke depression. Methods : Korean articles were retrieved from the 9 major Korean web article search engines. Foreign articles were retrieved from PubMed. Article published date was from 2000 up to September 2012. There were no restrictions on the types of publication, but articles not available in full text were excluded. The methodological quality was assessed according to Cochrane's assessment of risk of bias and Newcastle-Ottawa quality assessment scale. Results : Twenty-two articles were included in this study. Eleven articles were published in Korea, the rest were published in China. Nine articles were randomized controlled trials (RCT), one article was a non-randomized study (NRS), four articles were case reports, three articles were cross-sectional studies, two articles were comparative studies. In RCT articles, risk of selection bias and performance bias were generally high, risk of detection bias was unclear. The NRS article took four stars in Newcastle-Ottawa quality assessment. Comparison Hamilton rating scale for depression score between oriental medicine treated group and western medicine treated group revealed that there was no remarkable difference in mean score changes after treatment on PSD. Conclusions : The results of this study suggest that oriental medicine treatment is as effective as western medicine treatment for PSD. In the future, more rigorous oriental medicine treatment studies should be conducted.

지각된 위험, 기술 신뢰가 신기술 제품 수용의도에 미치는 영향: 낙관적 편향의 매개된 조절효과 (The Influence of Perceived Risk and Technology Trust on the Intention to Adopt New Technology Products: A Mediated Moderation Model of Optimistic Bias)

  • 김남희;송호준;천성용
    • 지식경영연구
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    • 제21권4호
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    • pp.227-241
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    • 2020
  • 혁신적인 신제품에 대한 소비자의 수용 의사결정에는 제품의 품질 이외에도 소비자의 위험인식과 같은 심리적 변수들이 상당한 영향을 미친다. 본 연구는 지각된 위험, 기술 신뢰 수준, 낙관적 편향과 같은 심리적 변수들이 혁신적인 나노기술 신제품 수용 의도에 어떤 영향을 미치는지 분석하였다. 분석 결과 우선 지각된 위험이 높은 소비자들은 나노기술제품에 대한 수용의도가 낮음을 확인하였다. 하지만 나노기술에 대한 신뢰 수준이 높은 경우에는 소비자들의 지각된 위험에 따른 나노기술 제품 수용의도의 유의미한 차이가 발견되지 않았다. 반대로 나노기술에 대한 신뢰 수준이 낮은 경우에는, 여전히 지각된 위험이 높을수록 나노기술 제품 수용의도가 낮았다. 또한, 본 연구는 이러한 기술 신뢰의 조절효과가 낙관적 편향이라는 변수를 통해 매개됨을 보였다. 즉, 기술 신뢰가 높을 경우 나노기술에 대해 자신이 타인보다 위험을 더욱 잘 통제할 수 있을 것이라는 믿음을 갖게 되고, 이렇게 높아진 낙관적 편향이 결과적으로 나노기술 제품에 대한 최종 수용의도를 높였다. 본 연구 결과를 통해 소비자의 신기술 제품 수용 결정에 다양한 심리적인 변수가 미치는 영향을 확인하고, 관련 기관의 정책 개발이나 기업의 마케팅 활동에 의미 있는 시사점을 제공해 줄 수 있을 것으로 기대한다.

염증성 근육뼈대계 질환에 대한 미세전류의 효과: 메타분석 (Effects of Microcurrent on Inflammatory Musculoskeletal Diseases: A Meta-Analysis)

  • 이정우;고운;두영택
    • 대한통합의학회지
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    • 제8권4호
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    • pp.1-11
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    • 2020
  • Purpose : The purpose of this meta-analysis was to examine the effects of microcurrent on inflammatory musculoskeletal diseases. Methods : Domestic databases (RISS, NDSL, KISS, DBpia, and Kmbase) were searched for studies that conducted clinical trials associated with microcurrent and its impact on inflammatory musculoskeletal diseases. A total of 606 studies published between 2002 and 2019 were identified, with 8 studies satisfying the inclusion data. The studies were classified according to patient, intervention, comparison, and outcome (PICO). The search outcomes were items associated with blood component, pain, and function. The 8 studies that were included in the study were evaluated using R meta-analysis (version 4.0). The quality of 7 randomized control trials was evaluated using Cochrane risk of bias (ROB). The quality of 1 non-randomized control trial was evaluated using risk of bias assessment tool for non-randomized studies (RoBANS). Effect sizes were computed as the corrected standard mean difference (SMD). A random-effect model was used to analyze the effect size because of the high heterogeneity among the studies. Egger's regression test was carried out to analyze the publishing bias. Results : The following factors had a large effect size involving microcurrent on inflammatory musculoskeletal diseases: blood component (Hedges's g=-2.46, 95 % CI=-4.20~-0.73), pain (Hedges's g=3.51, 95 % CI=2.44~4.77), and function (Hedges's g=3.06, 95 % CI: 1.53~4.58). Except for function (t=1.572, p=.191), Egger's regression test showed that the publishing bias had statistically significant differences. Conclusion : This study provides evidence for the effectiveness of microcurrent on inflammatory musculoskeletal diseases in terms of blood component, pain, and function. However, due to the small sample sizes used in the included studies, the results of our study should be interpreted cautiously, especially considering the publishing bias.

Effect of Screening on the Risk Estimates of Socio Demographic Factors on Cervical Cancer - A Large Cohort Study from Rural India

  • Thulaseedharan, Jissa Vinoda;Malila, Nea;Hakama, Matti;Esmy, Pulikottil Okuru;Cherian, Mary;Swaminathan, Rajaraman;Muwonge, Richard;Sankaranarayanan, Rengaswami
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권1호
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    • pp.589-594
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    • 2013
  • Background: Prospective cohort studies to determine cofactors with oncogenic HPV-infections for cervical cancer are very rare from developing countries and such data are limited to the few screening trials. Large screening trials provide such data as a by product. Some of the cases are prevented by screening and do not surface as invasive cancers at all. Also, pre-invasive lesions are detected almost entirely by screening. Screening causes selection bias if attendance in or effectiveness of screening is correlated with the risk factors. The aim of this study was to quantify the influence of screening on risk factors for cervical cancer. Materials and Methods: Our material stems from a rural cohort of 80,000 women subjected to a randomised screening trial. The effect of screening on the incidence of cervix cancer was estimated with reference to socio-demographic and reproductive risk factors of cervical cancer. We compared these risks with the incidence of cancer in the randomised control population by the same determinants of risk. Results: The results in the screening arm compared to the control arm showed that the women of low SES and young age were benefitting more than those of high SES and old age. The relative risk by age (30-39 vs 50-59) was 0.33 in the control arm and 0.24 in the screening arm. The relative risk by education (not educated vs educated) was 2.8 in the control arm and 1.8 in the screening arm. The previously married women did not benefit (incidence 113 and 115 per 100,000 women years in control vs screening arms) whereas the effect was substantial in those married (86 vs 54). Conclusions: The results in controls were consistent with the general evidence, but results in attenders and nonattenders of the screening arm showed that screening itself and self-selection in attendance and effectiveness can influence the effect estimates of risk factors. The effect of cervical cancer screening programmes on the estimates of incidence of cervical cancer causes bias in the studies on etiology and, therefore, they should be interpreted with caution.

항공교통관제사의 문화적 편향(Cultural Bias)에 따른 위기 대응 연구 (A Study on Air Traffic Controllers' Cultural bias and Their Response on Abnormal Situations)

  • 김근수;조성환
    • 한국항공운항학회지
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    • 제26권4호
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    • pp.64-75
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    • 2018
  • A status of air traffic controller is a government officer and air traffic controllers who work at airport are divided by duty rating and work experience. Abiding by law, rules and regulation, air traffic controllers are working together based on mutual trust. This paper's theoretical background is based on cultural bias theory. The theory divide people group into four groups according to cultural bias such as fatalism, hierarchy, individualism and egalitarianism. A research model was designed how such four cultural bias could affect air traffic controller's risk response in case of emergency or abnormal situation during their work. Depend on empirical research, it was found that air traffic controllers perceived they had been more biased to fatalism than hierarchy. The characteristics of fatalism group are as follows: first of all, they follow rigid rules and regulation. However, they have less self-efficacy compared to other government officers. According to structural equation model, air traffic controller's fatalism had a significant negative effect on organizational royalty. Their royalty, however, had a very significant positive effect on planning response and immediate response.

Bone loss-related factors in tissue and bone level dental implants: a systematic review of clinical trials

  • Mortazavi, Hamed;Khodadoustan, Amin;Kheiri, Aida;Kheiri, Lida
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • 제47권3호
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    • pp.153-174
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    • 2021
  • Dental implants are popular for dental rehabilitation after tooth loss. The goal of this systematic review was to assess bone changes around bone-level and tissue-level implants and the possible causes. Electronic searches of PubMed, Google Scholar, Scopus, and Web of Science, and a hand search limited to English language clinical trials were performed according to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines up to September 2020. Studies that stated the type of implants used, and that reported bone-level changes after insertion met the inclusion criteria. The risk of bias was also evaluated. A total of 38 studies were included. Eighteen studies only used bone-level implants, 10 utilized tissue-level designs and 10 observed bone-level changes in both types of implants. Based on bias assessments, evaluating the risk of bias was not applicable in most studies. There are vast differences in methodologies, follow-ups, and multifactorial characteristics of bone loss around implants, which makes direct comparison impossible. Therefore, further well-structured studies are needed.

심리사회적 중재가 암환자의 통증완화에 미친 효과: 메타분석 (Meta-analysis of Psychosocial Interventions to Reduce Pain in Patients with Cancer)

  • 오복자;한숙정
    • 대한간호학회지
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    • 제43권5호
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    • pp.658-668
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    • 2013
  • Purpose: The purpose of this study was to investigate the effects of psychosocial interventions on pain in cancer patients. Methods: Eight studies published between 1980 and 2012 in Korean and ten studies published between 2002 and 2012 in English met the inclusion criteria with a total of 1539 participants. Methodological quality assessed by Cochrane's Risk of Bias for randomized studies and Risk of Bias Assessment tool for non randomized studies. The data were analyzed by the RevMan 5.2 program of Cochrane library. Results: Overall, study quality was moderate to high. Effect sizes were heterogeneous and subgroup analysis was done. Cognitive behavioral therapy (CBT) were effective for pain (ES= -0.35; 95% CI= -0.56, -0.13). Pain education studies measured with NRS and VAS were effective for pain (ES= -0.77; 95% CI= -1.01, -0.52). Publication bias was not detected. Conclusion: This study support the use of psychosocial interventions administered to cancer patients for their pain management. However, more well-designed studies are needed.

작업장 유해요인조사에 기반한 인체공학적 중재가 작업 관련성 근골격계 질환의 증상에 미치는 효과: 체계적 문헌고찰 및 메타분석 (Effects of Workplace Risk Assessment-based Ergonomic Intervention on Work-Related Muscular Skeletal Disorders: Systematic Literature Review and Meta-Analysis)

  • 조정영;김가은
    • 한국직업건강간호학회지
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    • 제29권4호
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    • pp.342-353
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    • 2020
  • Purpose: This study aimed to systematically review literature and conduct a meta-analysis to comprehensively identify and evaluate the effects of workplace risk assessment-based ergonomic intervention on work-related muscular-skeletal disorders in workers. Methods: We searched the Ovid-Medline, EMBASE, and Cochrane library and up to 2018 using search terms such as muscular-skeletal, disorder, impairment, work-related muscular-skeletal disorders, ergonomic, intervention, management with no language limitations; screened reference lists; and contacted experts in the field. Results: We identified 545 references and included 13 randomized controlled tests (3,368 workers). We judged nine studies to have a low risk of bias, while the other four studies have a high risk of bias. Conclusion: Ergonomic intervention based on risk assessment in the workplace did not significantly differ in terms of the intensity of pain or duration of workers in the workplace, but low-quality evidence decreased the frequency of musculoskeletal disorder pain in three to six months moderate-quality evidence and in six to nine months low-quality evidence. Besides, low-quality evidence to reduce discomfort and moderate-quality evidence to improve worker posture. Therefore, ergonomic intervention based on the assessment of risk factors in the workplace should be applied to reduce pain frequency and discomfort and improve workers posture among musculoskeletal disorders.

Ultrasonography for Facial Nerve Palsy: A Systematic Review and Meta-Analysis Protocol

  • Seojung Ha;Bo-In Kwon;Joo-Hee Kim
    • Journal of Acupuncture Research
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    • 제41권1호
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    • pp.63-68
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    • 2024
  • Background: Facial nerve palsy presents a significant healthcare challenge, impacting daily life and social interactions. This systematic review investigates the potential utility of ultrasonography as a diagnostic tool for facial nerve palsy. Methods: Electronic searches will be conducted across various databases, including MEDLINE, EMBASE, CENTRAL (Cochrane Central register of Controlled Trials), CNKI (China National Knowledge Infrastructure), KMBASE (Korean Medical Database), ScienceON, and OASIS (Oriental Medicine Advanced Searching Integrated System), up to February 2024. The primary outcome will focus on ultrasonography-related parameters, such as facial nerve diameter and muscle thickness. Secondary outcomes will encompass clinical measurements, including facial nerve grading scales and electrodiagnostic studies. the risk of bias in individual study will be assessed using the Cochrane Risk of Bias assessment tool, while the grading of recommendations, assessment, development, and evaluations methodology will be utilized to evaluate the overall quality of evidence. Conclusion: This study aims to review existing evidence and evaluate the diagnostic and prognostic value of ultrasonography for peripheral facial nerve palsy.

Passive Smoking and Cervical Cancer Risk: A Meta-analysis Based on 3,230 Cases and 2,982 Controls

  • Zeng, Xian-Tao;Xiong, Ping-An;Wang, Fen;Li, Chun-Yi;Yao, Juan;Guo, Yi
    • Asian Pacific Journal of Cancer Prevention
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    • 제13권6호
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    • pp.2687-2693
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    • 2012
  • Objective: Passive smoking has been considered as a risk factor of many cancers. To examine whether it might also pose a risk for cervical cancer, we performed a meta-analysis based on published case-control studies. Methods: We searched the PubMed database and references of included studies up to February 10th, 2012 for relevant studies. After two authors independently assessed the methodological quality and extracted data, a meta-analysis was conducted using CMA v2 software. Publication bias was evaluated by funnel plot, using Egger's and Begg's tests. Results: Finally 11 eligible studies yielded, involving 3,230 cases and 2,982 controls. The results showed that women who never smoke but exposed to smoking experience a 73% increase in risk of cervical cancer compared with non-exposed women (OR = 1.73, 95% CI = 1.35 - 2.21, p<0.001). Subgroup and sensitivity analyses indicated this result to be robust. Moderate publication bias was detected by visualing funnel plot, Egger's and Begg's tests. Conclusion: Based on currently available evidence, the findings of this meta-analysis suggests that passive smoking significantly and independently increases the risk of cervical cancer.