how to write a introduction of systematic review of literature - scientific research help

WRITING AN INTRODUCTION OFA SYSTEMATIC REVIEW OF

LITERATURE - A QUICKREFERENCE TABLE

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Tags:Systematic review, meta-analysis, systematic review of literature,

writing a systematic review, statistical analysis, conducting a systematic review.

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Introduction

Systematic reviews are performed to synthesizing the evidence of multiple scientific investigations to answer aspecific research question in a manner that is reproducible and transparent while seeking to include all publishedevidence on the topic followed evaluating the quality of this evidence..

Systematic review remains among the best forms of evidence and reduce the bias inherent in other methods.

In the disciplines of public policy health and health sciences, the systematic reviews have become a mainmethodology..

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Meta-analysis: A meta-analysis utilizes statistical methods to incorporateappraisals of impact from relevant studies that are independent yet comparableand outline them.

Quantitative: To combine the results of 2 or more studies by using statisticalanalysis is called quantitative analysis.

Qualitative: The qualitative analysis generally defined as the results of the relevantstudies are summarized but not combined statistically.

DIFFERENT TYPES OF ASYSTEMATIC REVIEW

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Identification of research question

Inclusion & exclusion criteria

Rigorous & systematic search of the literature

Critical appraisal of included studies

Data extraction and management

Analysis & interpretation of results

Report for publication

KEY CHARACTERISTICS OF SYSTEMATIC REVIEW

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The identification of the research question is significant before undertaking a systematic review of literature. Forinstance, for what reason is this survey essential? What question should be replying?.

There are a variety of frameworks/tools available for supporting this process such as SPIDER, PICOS/PICO, SPICE andPEO criteria. These kinds of frameworks help to break down the question into relevant subcomponents and mapthem to concepts, to derive a formalized search criterion.

The PRISMA guidelines are widely followed by researchers in writing a systematic review. The PRISMA guidelinesguide researchers on how to write a systematic review and that comprises a flow diagram and a 27-item checklist.

A protocol of PRISMA guidelines including (1) Databases to be searched and additional sources (2) Keywords to beused in the search strategy (3) Limits applied to the search (4) Limits applied to the search (5) Screening process(6) Data to be extracted and (7) Summary of data to be reported.

Identification of research question

Inclusion & exclusion criteria It is important to determine the eligibility criteria before starting the systematic review including methods, study design,set criteria for the topic and the methodological quality of studies. Guidelines for systematic review

STEPS TO BE FOLLOWED BEFOREDRAFTING A SYSTEMATIC REVIEW


Contd...

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6170102/

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Some important web source for the article screening including PubMed (Biomedical and life sciences topic), Medline(Biomedical information and life sciences), Embase (Biomedical information), Web of Science (Multi discipline science),Biosis (Life sciences and biomedical topics), PsycINFO (Behavior and mental health), SCOPUS (Life sciences, socialsciences, physical sciences and health science), CINAHL (Cumulative Index to Nursing and Allied Health Literature),Cochrane Library (Database of systematic reviews), CENTRAL (The Cochrane Central Register of Controlled Trials) andOpenGrey (Grey literature).

Title and abstract screening The title and abstract of the articles should be screened whether the title and abstract are relevant to the present research. Full text review The remaining articles screened in an above mentioned way and the relevant articles are read in their entire texts. Data extraction The essential data of the articles are extracted in a data extract sheet in a uniform and structured manner. The extraction sheets may differ based on the study’s purpose. Generally, the data extraction sheet of containing the title of the article, study design, region, sample size, interventions and outcomes (Mueller et al, 2017). Data analysis The screened studies results can be analyzed by separating them based on the subthemes, themes often referred to as meta-synthesis (Siddaway et al, 2019). Publication Support | Research Services | Physician Writing | Scientific Communication Solution | Editing &Peer-Reviewing Copyright © 2019 pubrica. All rights reserved

AbstractThe abstract should contain a brief background, the aim of the study, a summary of methodology, a summary ofthe results, conclusion and keywords. IntroductionThe chapter contains a brief background about the present study followed by an overview of the aim andobjectives of the study undertaken. Methods The methodology should be containing a full justification and explanation for the managing and searching steps.Specifically, the justification contains a full explanation about inclusion/exclusion criteria, search string, searchingstrategy, limitations, how studies were screened, data extraction protocol, method of quality assessment andstatistical analysis. ResultsThe quantitative explanation and evidence must be given to the process of study exclusion/inclusion andsummarized in a specific flow diagram. A characteristic of study summary should be obtained, sum of all studies,age range, mean/median and other characteristics.


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DiscussionTo discuss the present study with the light of relative research done in other studies.The main component of the discussion chapter should be focused on discussingand identifying the limitations of studies included in the review. Conclusion The conclusion should be containing the summary of different aspects of thepresent study, the results generated as well as future scope of research and theconclusions derived from the present study.


SUMMARY

A systematic review of literature tends to be one of the most trusted sources of high-qualityinformation for clinical decisions.

Knowing the elements of a review will help practitioners evaluate their output more effectively.

There are many formal structures that help organize and monitor evaluations, for whichreproducibility is recommended.


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