A case study on maritime accidents using meta-analysis in capture -recapture

Author(s):  
Dankmar Böhning ◽  
John Bunge
2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Eric Janssen ◽  
Mike Vuolo ◽  
Clément Gérome ◽  
Agnès Cadet-Taïrou

Abstract This article presents original mixed method research to describe the use of rare illicit psychoactive substances, with special emphasis on crack cocaine in France. We first introduce a unique monitoring system committed to the observation of hard-to-reach populations. Qualitative findings rely, among others, on perennial ethnographic studies and field professionals’ knowledge to provide guidance to estimate the number of crack cocaine users. We then rely on a set of multilevel capture-recapture estimators, a statistical procedure to indirectly estimate the size of elusive populations. Since prior field evidence suggests an increasing diversity in crack cocaine users’ profiles, we provide a measure of heterogeneity to assess which estimator better fits the data. The calculated estimates are then critically reviewed and debated in light of the previously gathered information. Our results uncover both individual and institutional heterogeneity and suggest that the spread of crack cocaine in France initiated earlier than originally thought. Our case study underlines the need for field-driven assessments to put quantitative results into perspective, a necessary step to tailor efficient health policy responses.


2019 ◽  
Vol 9 (3) ◽  
pp. 487-510
Author(s):  
Sejla Almadi

Conceptual frameworks are conjectural/hypothetical research tools that are particularly important and widely used in the disciplined inquiry, including educational (technology) research. However, there is a lack of guidance on how to construct them. Hence, the objective of the current research was to provide a methodological perspective through a case study on how to develop such a framework for deductive research with a complex research subject. To this end, a five-step technique was constructed and implemented: text database, research panorama, authors’ network and thread, location, and definition. The case of Pygmalion effect was actual and significant as a recent meta-analysis found it to have an outstanding impact, among other leadership interventions, and relevant to educational research as it was first experimented in educational context. The conclusion found the five steps to be intertwined as they were built upon each other, carried the thread forward and opened it up deeper and closer to the research subject by each section. The errors and limitations involved uniqueness, availability, less is more, meaningfulness, approach, and space. Hence, the recommendations were defined as the regard for the complexity of the research subject and the approach to which the defined steps were delegated, the preliminary search on the most up-to-date academic papers on the subject, the only necessary number of collected sources and classes, the sense-making in implementing the steps, and the adaptation to longer essays, theses, or to prepare the foundation of research proposals.


2018 ◽  
Vol 1 (2) ◽  
pp. 174-185 ◽  
Author(s):  
Evan C. Carter ◽  
Michael E. McCullough

Recent discussions of the influence of publication bias and questionable research practices on psychological science have increased researchers’ interest in both bias-correcting meta-analytic techniques and preregistered replication. Both approaches have their strengths: For example, meta-analyses can quantitatively characterize the full body of work done in the field of interest, and preregistered replications can be immune to bias. Both approaches also have clear weaknesses: Decisions about which meta-analytic estimates to interpret tend to be controversial, and replications can be discounted for failing to address important methodological heterogeneity. Using the experimental literature on ego depletion as a case study, we illustrate a principled approach to combining information from meta-analysis with information from subsequently conducted high-quality replications. This approach (a) compels researchers to explicate their beliefs in meta-analytic conclusions (and also, when controversy arises, to defend the basis for those beliefs), (b) encourages consideration of practical significance, and (c) facilitates the process of planning replications by specifying the sample sizes necessary to have a reasonable chance of changing the minds of other researchers.


2018 ◽  
pp. 285-302
Author(s):  
Eliana Al Haddad ◽  
Hutan Ashrafian ◽  
Thanos Athanasiou
Keyword(s):  

2018 ◽  
pp. 263-284
Author(s):  
Sulbaran Marianny ◽  
Sousa Afonso ◽  
Bustamante-Lopez Leonardo
Keyword(s):  

2018 ◽  
pp. 249-261
Author(s):  
Bashar J. Qumseya ◽  
Michael Wallace
Keyword(s):  

PLoS ONE ◽  
2019 ◽  
Vol 14 (4) ◽  
pp. e0215458 ◽  
Author(s):  
J. Terrill Paterson ◽  
Kelly Proffitt ◽  
Ben Jimenez ◽  
Jay Rotella ◽  
Robert Garrott

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