Statistical Methods for Examining Heterogeneity and Combining Results from Several Studies in Meta-Analysis

Author(s):  
Jonathan J Deeks ◽  
Douglas G Altman ◽  
Michael J Bradburn
Author(s):  
Dankmar Böhning ◽  
Uwe Malzahn ◽  
Peter Schlattmannn ◽  
Uwe-Peter Dammann ◽  
Wolfgang Mehnert ◽  
...  

1995 ◽  
Vol 117 (1) ◽  
pp. 176-180
Author(s):  
Malcolm S. Taylor ◽  
Csaba K. Zoltani

Measurements of the resistance to flow through packed beds of inert spheres have been reported by a number of authors through relations expressing the coefficient of drag as a function of Reynolds number. A meta-analysis of the data using improved statistical methods is undertaken to aggregate the available experimental results. For Reynolds number in excess of 103 the relation log Fv = 0.49 + 0.90 log Re′ is shown to be a highly effective representation of all available data.


2009 ◽  
Vol 9 (5) ◽  
pp. 424-425 ◽  
Author(s):  
Dino Samartzis ◽  
Rafael Perera

2014 ◽  
Vol 34 (2) ◽  
pp. 343-360 ◽  
Author(s):  
Zhi-Chao Jin ◽  
Xiao-Hua Zhou ◽  
Jia He

1993 ◽  
Vol 23 (4) ◽  
pp. 871-889 ◽  
Author(s):  
G. Dunn ◽  
P. Sham ◽  
D. Hand

SynopsisA critical examination is made of the role that statistical methods have played in the understanding of depression. The development of instruments for measuring depression is illustrated by reference to the Beck Depression Inventory and the Hamilton Rating Scale. The controversy over the existence of one or two types of depression is examined from the perspective of the statistical tools used. Some of the problems in studies of the heritability of depression are outlined. The development of clinical trials of depression is examined, with particular reference to ECT and maintenance therapy, and the role of meta-analysis is discussed.


Biometrics ◽  
1986 ◽  
Vol 42 (2) ◽  
pp. 454 ◽  
Author(s):  
P. R. Freeman ◽  
L. V. Hedges ◽  
I. Olkin

2018 ◽  
Vol 9 (3) ◽  
pp. 208-212
Author(s):  
A.N. Krichevets

The article discusses the methodological difficulties associated with the spread of statistical methods of data processing in psychological works. In particular, there is a simplification of the understanding of statistics by researchers, which increasingly leads to the adoption of the hypothesis of the presence of the effect, in a situation where it is not. There is a brief review of publications and examples where this issue is the subject of critical analysis. Presented a research which showed that in the repetition of experiments published in reputable journals, the significance accepted in the scientific community was observed only in 39% of the works — this effect was called the “publication shift”. The article discusses ways to solve this problem, in particular, meta-analysis, through which it is possible to confirm the results of a series of experiments relating to one problem — subject to the availability of information about the design and openness of raw data. An understanding of the probabilistic nature of statistical results must be mandatory for the evaluation of studies


2019 ◽  
Vol 50 (2) ◽  
pp. 6-6
Author(s):  
Stanisław Matusik

Purpose. The aim of the study was to discuss the use of tools and methods of statistical analysis, as well as forms of graphic presentation of results obtained in articles published in “Folia Turistica” during the last 30 years of its history. Method. The basic method was a review of all articles in terms of the use of statistical methods applied in scientific papers published in “Folia Turistica” in the years 1990 - 2018 (volumes 1- 49). Findings. Out of 486 articles published in 49 volumes of “Folia Turistica” from 1990-2018, 31% used statistical tools and methods. The graphic presentation of analysis of results can be found in 78 articles (including 12 publications with prepared maps), the use of statistical tests in 35 articles, and the use of multi-dimensional statistical methods in 28 articles. An important part of the works are methodological publications. The authors used statistical parametric and non-parametric tests, linear and non-linear regression models, taxonomic and factor analysis and (in individual cases) relatively rare tests, including those related to spatial analyses (I-Moran and Isard coefficient). Research and conclusions limitations. The work concerns the use of statistical tools and methods in scientific articles in “Folia Turistica” issue No. 1-49. In some works, there was no verification of the applicability assumptions of selected statistical tools or justification for their selection, or the purposes of the research were too general. Practical implications. The indicated tools and methods of statistical analysis may be inspiration for authors and readers of scientific papers in the preparation of numerical data and forms of their presentation. Originality. Meta-analysis was prepared on the occasion of the anniversary edition of the 50th issue of “Folia Turistica”. Type of paper. The article is a review.


2001 ◽  
Vol 10 (5) ◽  
pp. 325-338 ◽  
Author(s):  
Allan Donner ◽  
Gilda Piaggio ◽  
José Villar

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