• Title/Summary/Keyword: Meta analysis

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Meta-Analysis of AIDS Prevention Programs

  • Kim, Yeon-Hee
    • Korean Journal of Health Education and Promotion
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    • v.3 no.1
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    • pp.129-142
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    • 2001
  • Meta-analysis methods are becoming a central part of research integration in behavioral and medical science studies. The main goal of the meta-analysis is combining the quantitative findings from several studies which address the same research problem and is sharing conclusions in a published report. The purpose of this research is to develop meta-analysis approach to evaluate effectiveness of instructional program design to improve school-age children's knowledge and understanding of Acquired Immune Deficiency Syndrome (AIDS). To achieve this purpose, meta-analysis is applied to analyze and synthesize findings for AIDS instructional programs from several prior studies.

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Facilitating Pre-Service Elementary Teachers' Productive Reflection on Their Science Teaching through Meta-Analysis of Their Reflective Journals (수업 반성 저널의 메타 분석 활동을 통한 초등 예비교사의 생산적 반성 증진)

  • Yoon, Hye-Gyoung
    • Journal of Korean Elementary Science Education
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    • v.33 no.2
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    • pp.322-334
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    • 2014
  • In this study, the researcher aimed to increase productive reflection of pre-service elementary teachers through meta-analysis of their own reflective journals. The meta-analysis activities are expected to enhance their learning effectively as a kind of self-assesment. During 8 week simulation teaching, 26 pre-service teachers kept individual journal writing and the meta-analysis activities were implemented twice (after the 3rd and 8th week). Right after the first meta-analysis, the pre-service teachers' productive reflection increased clearly. However this would not guarantee the effect would last long time period. By analyzing 8 week reflective journals, reports on meta-analysis activities and small group interview, this study shed light on practical ways of enhancing reflective teacher education.

A Review of the Meta-Analysis in Library and Information Science (문헌정보학분야에서 메타분석 연구에 관한 고찰)

  • Ro, Jung-Soon
    • Journal of the Korean Society for Library and Information Science
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    • v.42 no.1
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    • pp.45-61
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    • 2008
  • Meta-analysis refers to the analysis of analysis. It is the statistical analysis of a large collection of analysis results from individual studies for the purpose of summarizing, integrating and interpreting the inconsistent findings. However, no meta-analysis study has been conducted in Library and Information Science in Korea. This Study introduced the characteristics, basic principles, analysis procesure, and major models of meta-analysis, reviewed meta-analysis studies in Library and Information Science, and discussed major problems in conducting meta-analysis in Library and Information Science especially in Korea.

Meta-analysis in dental research (치의학 분야에서의 메타 분석)

  • Lim, Hoi-Jeong
    • The Journal of the Korean dental association
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    • v.52 no.8
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    • pp.478-490
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    • 2014
  • Recently, importance of meta-analysis is increasing in the field of dentistry, since it is not easy to settle controversies arising from conflicting studies. Meta-analysis is the statistical method of combining results from two or more individual studies that have been done on the same topic. Merits of meta-analysis include an increase in power, an improvement in precision, and the ability to address solution not provided by individual studies. However, it might mislead researchers when variation across studies and publication bias are not carefully taken into consideration. The purpose of this study is to help understand meta-analysis by making use of individual results in dental research paper.

A genome-wide association study of reproduction traits in four pig populations with different genetic backgrounds

  • Jiang, Yao;Tang, Shaoqing;Xiao, Wei;Yun, Peng;Ding, Xiangdong
    • Asian-Australasian Journal of Animal Sciences
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    • v.33 no.9
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    • pp.1400-1410
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    • 2020
  • Objective: Genome-wide association study and two meta-analysis based on GWAS performed to explore the genetic mechanism underlying variation in pig number born alive (NBA) and total number born (TNB). Methods: Single trait GWAS and two meta-analysis (single-trait meta analysis and multi-trait meta analysis) were used in our study for NBA and TNB on 3,121 Yorkshires from 4 populations, including three different American Yorkshire populations (n = 2,247) and one British Yorkshire populations (n = 874). Results: The result of single trait GWAS showed that no significant associated single nucleotide polymorphisms (SNPs) were identified. Using single-trait meta analysis and multi-trait meta analysis within populations, 11 significant loci were identified associated with target traits. Spindlin 1, vascular endothelial growth factor A, forkhead box Q1, msh homeobox 1, and LHFPL tetraspan submily member 3 are five functionally plausible candidate genes for NBA and TNB. Compared to the single population GWAS, single-trait Meta analysis can improve the detection power to identify SNPs by integrating information of multiple populations. The multiple-trait analysis reduced the power to detect trait-specific loci but enhanced the power to identify the common loci across traits. Conclusion: In total, our findings identified novel genes to be validated as candidates for NBA and TNB in pigs. Also, it enabled us to enlarge population size by including multiple populations with different genetic backgrounds and increase the power of GWAS by using meta analysis.

The Review on the Evidence-Based Study of Acupuncture - Systematic review and Meta-analysis - (침(鍼)의 근거중심적(根據中心的) 연구동향(硏究動向)에 관(關)한 고찰(考察) - Systematic review & Meta-analysis를 중심으로 -)

  • Back, Yong-Hyeon;Park, Dong-Seok;Kang, Sung-Keel
    • Journal of Acupuncture Research
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    • v.19 no.3
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    • pp.138-155
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    • 2002
  • Objective : The purpose of this study is to work on the problems and on the direction of the study regarding the evidence-based study of Acupuncture. Methods : We reviewed the PubMed electronic database. Eight articles of systematic review without meta-analysis and six articles without meta-analysis were selected. Results : In the study of eight articles of systematic review without meta-analysis, there were two articles on effectiveness of acupuncture and one on non-effectiveness of acupuncture. Four articles were about the changes according to the quality of randomized controlled trials. Also, one article was about the side-effect of acupuncture. In the study of six articles of systematic review with meta-analysis, there were two articles on Odds Ratio, two on Relative Risk, one on number-needed-to-treat, and two on 18 predefined methodological criteria. Conclusion : As the quality of RCTs was high, positive response decreased and as the quality of RCTs was low, positive response increased. For the study of evidence-based acupuncture, it is necessary that we conduct research on well-planned placebo acupuncture, large sample size, statistical method, method of searching and assessing literature and method of meta-analysis.

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The effects of coordinative locomotor training on balance in patients with chronic stroke: meta-analysis of studies in Korea (협응이동훈련이 만성 뇌졸중 환자의 균형에 미치는 효과: 국내연구의 메타분석)

  • Lim, Jae Heon;Park, Se Ju
    • Journal of Korean Physical Therapy Science
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    • v.27 no.2
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    • pp.36-47
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    • 2020
  • Background: This study purposed to provide meaningful information for the accumulation of knowledge on coordinative locomotor training in patients with stroke. Design: Meta-analysis. Methods: This study collected articles which the coordinative locomotor training in patients with stroke. For systematic meta-analysis, 6 articles were finally selected after searching based on the PICOSD criteria. This meta-analysis was conducted according to PRISMA guidelines. Randomized controlled trials were included and the risk of bias was evaluated for each study. Pooled standardized mean differences were calculated using a random effects model. To extract the effect size of each study, the R 3.5.3 software was used. Results: The meta-analysis showed that a total effects size was 1.23 indicating that coordinative locomotor training for patients with stroke had a maximum effect size. Conclusion: A meta-analysis is warranted for further research to determine the effects of coordinative locomotor training in patients with stroke on muscle strength, walking and range of motion.

A Meta-analysis of the Effects of Smoking Prevention Programs in Korea (흡연예방프로그램 효과에 대한 메타분석)

  • Park Eun-Ok
    • Journal of Korean Academy of Nursing
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    • v.34 no.6
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    • pp.1004-1013
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    • 2004
  • Purpose: The purpose of this paper was to describe the characteristics of smoking prevention programs in Korea, to estimate overall effect size of Korean smoking prevention programs, and to investigate effect size variations by program modality and instruction method. Method: Meta-analysis was performed on2l programs in 20 studies. Result: The estimation of overall effect size for knowledge and attitude was not possible because effect sizes were not homogeneous in this meta-analysis. However, effect sizes of studies that were socially influential programs or active/interactive methods were larger than information-oriented programs or passive/non-interactive methods in the pictures. The effects for behavioral outcomes were generally not as positive and not statistically significant. Q statistics showed that variations among effect sizes within program modality and instruction method classifications were heterogeneous. Conclusion: The results from this meta-analysis support the continued use of socially influential programs and active/interactive methods for smoking prevention programs. Because behavioral effect might be the fundamental objective of smoking prevention programs, the present results indicate that smoking prevention programs should consider adopting more effective programs.

A step-by-step guide to Meta-analysis with dichotomous outcomes using RevMan in dental research (치의학 연구에서 RevMan을 이용한 이분형 결과변수를 분석하기 위한 메타분석의 단계적 안내)

  • Park, Su-Hyeon;Lim, Hoi-Jeong
    • The Journal of the Korean dental association
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    • v.56 no.1
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    • pp.18-40
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    • 2018
  • Meta-analysis is a statistical method that combines the results of individual studies on the same topic. This method is becoming popular, due to providing the combined result that individual studies cannot provide and giving a more precise result. Despite meta-analysis having such significance, there were few Korean guides for the use of the Review Manager (RevMan) software. This study will provide a step-by-step guide, using orthodontic mini-screw as a dental example, to help researcher carry out meta-analysis more easily and accurately.

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