4. review of literature

UNIT-3 (d):
Ms. Chanda Jabeen
Lecturer
RN, RM, BSN
M.Phil. Epidemiology & Public Health
PhD (Scholar) Epidemiology & Public Health
1

OBJECTIVES
At the completion of this lecture learners will be
able to:
• Define literature review and related terms
• Explain Importance, Purpose & types of
Literature Review
• Identify theoretical and empirical literature and
their resources
• Locate search engines and literature data bases
like Cochrane, CINHAL, PubMed etc
• Explain Steps of Literature Review
2

INTRODUCTION
• Review of literature is one of the most important
steps in the research process.
• It is an account of what is already known about a
particular phenomenon.
• The main purpose of literature review is to
convey to the readers about the work already done
& the knowledge & ideas that have been already
established on a particular topic of research.
• Literature review is a laborious task, but it is
essential if the research process is to be
successful.
3

Meaning Of Literature Review
• A literature review is an evaluative report of
information found in the literature related to your
selected area of study. The review should describe,
summaries, evaluate and clarify this literature. It
should give a theoretical base for the research and
help you (the author) determine the nature of your
research.
4

• A literature review is an evaluative report of
information found in the literature related to
selected area of study. The review describes,
summarizes, evaluates & clarifies this literature. It
gives a theoretical base for the research & helps to
determine the nature of research (Queensland
University, 1999).
• A literature review is a body of text that aims to
review the critical points of knowledge on a
particular topic of research (ANM, 2000).
5

• A literature review is an account of what has been
already established or published on a particular
research topic by accredited scholars &
researchers. (University of Toronto, 2001)
6

Identification of a research problem & development
or refinement of research questions.
Generation of useful research questions or
projects/activities for the discipline.
Orientation to what is known & not known about
an area of inquiry to ascertain what research can
best contribute to knowledge.
Determination of any gaps or inconsistencies in a
body of knowledge.
8

Discovery of unanswered questions about
subjects, concepts or problems.
Determination of a need to replicate a prior study
in different study settings or different samples or
size or different study populations.
Identification of relevant theoretical or conceptual
framework for research problems.
Identification or development of new or refined
clinical interventions to test through empirical
research.
9

Description of the strengths & weaknesses of
design/methods of inquiry & instruments used in
earlier research work.
Helps in planning the methodology of the present
research study.
It also helps in development of research instruments.
Identification of suitable design & data collection
methods for a research study.
Assistance in interpreting study finding & in
developing implications & recommendations.
10

The purpose of a literature review is to convey to
the reader previous knowledge & facts established
on a topic, & their strength & weakness.
The literature review allows the reader to be
updated with the state of research in a field & any
contradictions that may exist with challenges
findings of other research studies.
It helps to develop research investigative tools & to
improve research methodologies.
12

It also provide the knowledge about the problems
faced by the previous researchers’ while studying
same topic.
Besides enhancing researchers’ knowledge about
the topic, writing a literature review helps to:
Place each in the context of its contribution to the
understanding of subject under review.
Describe the relationship of each study to other
research studies under consideration.
13

Identify new ways to interpret & shed light on any
gaps in previous research.
Identify areas of prior scholarship to prevent
duplication of effort.
Point a way forward for further research.
See what has & has not been investigated.
Identify potential relationship between concepts &
to identify researchable hypothesis.
Learn how others have defined & measured key
concepts.
Identify data sources that other researchers have
used.
14

Literature can be reviewed from two sources:
1. Primary sources
2. Secondary sources
16

1. Primary Sources
• Literature review mostly relies on primary sources,
i.e. research reports, which are description of
studies written by researchers who conducted them.
• A primary sources is written by a person who
developed the theory or conducted the research, or
is the description of an investigation written by the
person who conducted it.
• Most primary sources are found in published
literature.
• For example, a nursing research article.
• A credible literature review reflects the use of
mainly primary sources.
17

• Example of a primary source: An original
qualitative on patient experiences in the ICU:
Hupcey, J. E. (2000). Feeling safe the
psychosocial needs of ICU patients. Journal of
Nursing Scholarship, 32:361-367.
18

2. Secondary Sources
• Secondary source research documents are
description of studies prepared by someone other
than the original researcher.
• They are written by people other than the
individuals who developed the theory or
conducted the research.
• The secondary sources may be used when
primary sources are not available or if researchers
want external opinions on an issue or problem or
even the results of their own research.
19

• Example of a Secondary Source: A literature review on
patient experiences in the ICU: Stein-Parbury, J. &
Mckinley, S. (2000) patient experiences of being in an
intensive care unit: a select literature review. American
Journal of critical care, 9:20-27.
20

Quality of Sources
Peer-reviewed
• Peer-reviewed means that the author of the research
report, clinical description, or theoretical explanation
has submitted a manuscript to a journal editor, who
identified scholars familiar with the topic to review the
manuscript.
• (to read, check, and give your opinion about something
that has been written by
another scientist or expert working in the
same subject area as you)
• These scholars provide input to the editor about whether
the manuscript in its current form is accurate, meets
standards for quality, and is appropriate for the journal.
• A peer-reviewed paper has undergone significant
scrutiny and is considered trustworthy.
21

• Quality literature reviews include relevant and
current sources.
• Relevant studies are those with a direct bearing
on the problem of concern.
• Current sources are those published within 5
years before publication of the manuscript.
• Some problems have been studied for decades,
and the literature review often includes seminal
and landmark studies that were conducted years
ago.
22

• Seminal studies are the first studies on a
particular topic that signaled the beginning of a
new way of thinking on the topic and sometimes
are referred to as classical studies.
• Landmark studies are significant research
projects that have generated knowledge that
influences a discipline and sometimes society as
a whole. Such studies frequently are replicated or
serve as the basis for the generation of additional
studies
23

• Replication studies are reproductions or
repetitions of a study that researchers conduct to
determine whether the findings of the original
study could be found consistently in different
settings and with different subjects. Replication
studies are important to build the evidence for
practice.
24

Resources
of
literature
reviewEncyclopedia
&
dictionary
Electronic
database
Books
Journals
Conference
papers
Thesis
Research
Reports
25

1. Electronic Sources:
Computer-assisted literature search has
revolutionized the review of literature.
These searches, however, for a variety of reasons
may not provide the desired references.
Electronic literature search through web may be very
useful, but sometimes it can be time consuming &
unpredictable because there are many website &
web pages that can lead to information overload &
confusion.
however, currently it is one of the most important
sources of literature searches.
26

General literature search can be conducted through
search engines like Yahoo (www.yahoosearch.com),
Google (www.google.com), MSN search, Lycos,
WebCrawler, Alta Vista, or Excite.
The most relevant nursing databases are as follows:
CINAHL (Cumulative Index to Nursing & Allied
Health Literature): Accessible at
http://www.cinahl.com, it citations of nursing
literature published after 1988. Even full-text articles
are available on CINAHL plus, a paid web page.
27

PubMed: PubMed can be used to search research
abstracts, available at http://pubmed.com
MedlinePlus: It is the National Library of
Medicine’s web sites for consumer health
information. It is available at
http://www.medlineplus.gov.
ERIC: The ERIC database is the largest
source of education information. A free
search may be carried out at
http://www.eric.ed.gov.
29

MEDLINE (Medical Literature Analysis &
Retrieved System Online): It is another electronic
source of literature review commonly used by nurses.
The National Library of Medicine provides free
access to MEDLINE through PubMed, available at
www.pubmed.com or
http://ncbi.nih.gov/entrez/query.fcgi. generally,
abstracts of research articles are provided free of
cost; some of the full-text copies are also freely
available & some others are available for a free.
Cochrane Database of System Reviews: Health care-
related literature can be searched from this source,
available at http://www.cochrane.org.
30

count,…
Registry of Nursing Research: Sigma Theta Tau
International Honor Society of Nursing makes this
database available through its Virginia Henderson
International Nursing Library. Access to this
database has been redesigned & made easier for
users to obtain evidence & scientific findings from
more than 2,200 research article & conference
abstracts. The research abstracts are searched via
key words, author, & title of the research study.
Free access to this database may be found at
http://www.nursinglibrary.org
31

psycINFO: The psycINFO database belongs to
American Psychological Association, & covers
literature from psychological or related
disciplines. It may be searched at
http://www.psychinfo.com.
Dissertation abstracts online: Abstracts of
masters’ & doctoral theses are available on this
electronic database
32

Online Journals: Following are the website addresses for
journals & magazines that are available online:
http://www.nursefriendly.com/nursing/linksections/nursingj
ornal.html
http://www.nsna.org
http://www.healthweb.org
http://www.ispub.com/ostia/index.php
http://www.healthweb.org.browse.cfm?catergy=1727
http://www.juns.nursing.arizona.edu
http://www.medbioworld.com
http://www.nursingworld.org.ojin
http://www.eaa-knowledge.com.ojni/#
33

Other online databases: Many other online database can be
searched for free by nurses from the following websites:
http://www.aidsinfo.nih.gov (HIV/AIDS information)
http://www.hazmap.nlm.nih.gov (information on hazardous
agents)
http://www.child.nih.gov (combined health information
database)
http://www.toxinet.nlm.nih.gov (toxicology database
network)
34

Cancer Lit (Cancer literature)
EMBASE (exerpta Medica Database)
ETOH (Alcohol & alcohol problems science
database)
Health STAR (Health services technology
administration & research)
Radix (Nursing managed care databse)
CD-ROM (Compact disc-read only memory)
with research databse
35

2. Printed Sources
• Printed sources are also used for literature review.
• Printed research summary may be located from
published abstracts such as Nursing Research
Abstract, Psychological Abstracts, Dissertation
Abstract International, Masters Abstract
International, etc.
• References of the other printed sources may be
located through indexes such as cumulative Index
to Nursing & Allied Health Literature, Nursing
Studies Index, & Index Medicus.
.
36

• Following are the main printed sources that can be
used to review the relevant literature:
Journals: There are several National &
International journals which can be used to review
the research-related literature
37

Name of National Nursing Journals
• Nursing & Midwifery
Research Journal
• Indian journal of
Nursing Research &
Midwifery
• The nursing Journal
of India
• Nightingale Nursing
Times
• Indian Journal of
Nursing Studies
38

Names of international journals
• Nursing Research
• Research in Nursing &
Health
• Nursing Sciences
Quarterly
• Western Journal of
Nursing Research
• Applied Nursing Research
• Biological Research for
Nursing
• Advances in Nursing
Sciences
• Worldviews on Evidence-
Based Nursing
• Journal of Qualitative
Research
• American Journal of
Nursing
• International Journal of
Nursing Studies
• Clinical Nursing
Research
39

Count…
Research reports
Unpublished dissertations & theses
Magazines & newspapers
Conference papers & proceedings
Encyclopedias & dictionaries
Books
40

Flow Of Tasks in A Literature Review
41

A. Preparing to review the literature
1. Clarify the purpose of the literature review.
2. Select electronic databases and search terms.
B. Conducting the search
3. Search the selected databases.
4. Use a table to document the results of your search.
5. Refine your search.
6. Review the abstracts to identify relevant studies.
7. Obtain full-text copies of relevant articles.
8. Ensure that information needed to cite the source is
recorded.
43

C. Processing the literature
9. Read the articles.
10. Appraise, analyze, and synthesize the
literature.
D. Writing the review of the literature
11. Develop an outline to organize information
from the review.
12. Write each section of the review.
13. Create the reference list.
14. Check the review and the reference list.
44

Types of Literature Review
• Narrative literature review critiques the
literature and summarizes the body of a
literature. Narrative review also draws
conclusions about the topic and identifies gaps
or inconsistencies in a body of knowledge. You
need to have a sufficiently focused research
question to conduct a narrative literature review.
45

• Systematic literature review requires more
rigorous and well-defined approach compared to
most other types of literature review.
• Systematic literature review is comprehensive
and details the timeframe within which the
literature was selected.
• Systematic literature review can be divided into
two categories: meta-analysis and meta-synthesis.
46

• When conduct meta-analysis take findings from
several studies on the same subject and analyze
these using standardized statistical procedures.
In meta-analysis patterns and relationships are
detected and conclusions are drawn. Meta-
analysis is associated with deductive research
approach.
• Meta-synthesis, on the other hand, is based on
non-statistical techniques. This technique
integrates, evaluates and interprets findings of
multiple qualitative research studies. Meta-
synthesis literature review is conducted usually
when following inductive research approach.
47

• Argumentative Writing, In argumentative
writing, a writer takes a stand or forms an
opinion and writes to convince the reader to
believe this point of view.
• Integrative literature review reviews,
critiques, and synthesizes secondary data about
research topic in an integrated way such that
new frameworks and perspectives on the topic
are generated.
48

• Theoretical literature review focuses on a pool
of theory that has accumulated in regard to an
issue, concept, theory, phenomena. Theoretical
literature reviews play an instrumental role in
establishing what theories already exist, the
relationships between them, to what degree the
existing theories have been investigated, and to
develop new hypotheses to be tested.
49

Be specific & be succinct:
Briefly state specific findings listed in
an article, specific methodologies used in a study,
or other important points. Literature reviews are
not the place for long quotes or in-depth analysis
of each point.
Be selective:
Researcher should narrow down a lot of
information into a small space for literature
review. Just the most important points (i.e. those
most relevant to the review’s focus) must be
mentioned in each work of review.
51

Focus of current topics:
Researcher needs to analyse points
such as if it is a current article, & if not, how old
it is: has its claims, evidence, or arguments been
superseded by more recent work; if it is not
current, then if it is important for historical
background ; etc.
52

Count…Ensure evidence for claims:
Researcher should focus on what support is
given for claims made in literature. What evidence
& what type (experimental, statistical, anecdotal,
etc.) of evidences are offered? Is the evidence
relevant & sufficient? What arguments are given?
What assumptions are made, & are they warranted?
Focus on sources of evidences:
Researchers should ensure the reliability of the
sources of the evidence or other information – if
they are from author’s own experiments, surveys,
historical records, government documents, etc. He
should check how reliable those sources are.
53

Count…Reference citation:
Any references cited in the literature review
must be included in the bibliography. The common
practice is that the reviewer does not list references
in the bibliography that are not directly cited in the
literature review or elsewhere in the paper /thesis.
Avoid abbreviations:
Avoid technical terms, jargons &
abbreviations.
Simple & accurate sentence structure:
A researcher should use simple
sentences & must avoid errors of grammar &
punctuation
54

Referring original source:
The reviewer should focus on citing
the material that originates with each reference.
This may require a careful reading of the
reference. If the reference author refers to another
source whose ideas are relevant or interesting, it
is better to track & use that original reference.
55

Example…
Sexual harassment has many consequences. Adams, Kottke, & Padgitt (1983)
found that some women students said that they avoided taking a class or
working with certain professors because of the risk of harassment. They also
found that men & women students reacted differently. Their research was
conducted through a survey of 1,000 men & women graduate &
undergraduate students. Benson & Thomson’s study in social Problem (1982)
lists many problems created by sexual harassment. In their excellent book,
the Lecherous Professor, Dziech & Weiner (1990) give a long list of
difficulties that victims have suffered.
The victims of sexual harassment suffer a range of consequences, from
lowered self-esteem & loss of self-confidence to withdrawal from social
interaction, changed career goals, & depression (Adams, Kottke, & Padgitt,
1983; Benson & Thomson, 1982; Dziech & Weiner, 1990). For example,
Adams, Kottke, & Padgitt (1983) noted that 13% of women students said that
they avoided taking a class or working with certain professors because of the
risk of harassment.
Example of a bad review
Example of a better review
56

References
Polit, D. F., & Beck, C. T. (2017). Nursing
research: Generating and Assessing Evidence for
Nursing Practice (10th ed.). Philadelphia:
Lippincott Williams & Wilkins.
Burns, N. & Grove, S. K. (2007). Understanding
nursing research. (4th ed.).Philadelphia: W.B.
Saunders.
57

4. review of literature

More Related Content

What's hot

Similar to 4. review of literature

More from Chanda Jabeen

Recently uploaded

4. review of literature