Unit 1 Biostatistics
Unit 1 Biostatistics
Definition of Research
"Research is a systematized effort to gain new knowledge".
RESEARCH IN COMMON REFERS TO SEARCH FOR KNOWLEDGE.
IN OTHER WORDS, IT IS A SCIENTIFIC AND SYSTEMATIC SEARCH FOR
INFORMATION ON SPECIFIC TOPIC.
Characteristics/Features of Good Research
Characteristics of Research
1. Empirical - research is based on direct experience or observation by the
researcher.
2. Logical-research is based on valid procedures and principles.
3. Cyclical -research starts with a problem and ends with a problem.
4. Analytical - research utilizes proven analytical procedures in gathering data,
whether historical, descriptive, experimental, and case study.
5. Critical-research exhibits careful and precise judgment.
6. Methodical - research is conducted in a methodical manner without bias
using systematic method and procedures.
7. Replicability - research design and procedures are repeated to enable the
researcher to arrive at valid and conclusive results.
Quantitative Research
• Quantitative data relies on quantifying a certain amount or quantity of a
specific phenomenon.
• It focuses on gathering and analyzing numerical data and can be used to
find averages and patterns or to predict outcomes.
• Quantitative Research falls within the two primary categories of research
and relies on numbers.
• It draws a conclusion using tables, facts, and graphs. Many scientific and
field-based studies primarily use this form of research.
Qualitative Research
• It refers to the non-numerical elements in the research.
• Qualitative research helps to form a better summary of theories in the
data.
Descriptive Research
• Descriptive research is a type of analysis that outlines the features of the
population or issues under study.
• This descriptive methodology focuses on the “what” of the research
problem more than the “why.”
• The primary methods used in descriptive research include observations,
surveys, and case studies
• Its advantages include a) being effective at analyzing topics and issues
that cannot rely on numbers, b) being observable in an unaltered natural
environment, and c) taking less time than quantitative experiments.
Analytical Research
• Analytical research uses proven facts to form the basis for the research.
Researchers frequently research to find supporting data that strengthens
and authenticates their earlier findings. Also, it helps to develop new
concepts related to the research subject.
• There are various ways to conduct this research, including meta-analysis,
literary or scientific trials, and learning about public opinion.
Applied Research
• Action research that only studies one domain and usually generalizes the
findings is called applied research
• Applied research aims to solve a current issue facing society or a
business/industrial organization.
• Applied research is considered non-systematic inquiry; a business,
government body, or individual typically conducts this research to
address a particular issue.
Fundamental Research
• The formulation of a theory and generalizations are the primary
concerns of fundamental research.
• It seeks to discover facts with a wide range of applications,
supplementing the ideas already known in a specific field or industry.
• Some examples of fundamental research are research on the
generalization of human behavior or research on pure mathematics.
Exploratory Research
• Theories and their explanation are the basis of Exploratory Research.
• Its goal is only to investigate the study questions, not to provide
definitive and conclusive solutions to current problems.
• The findings are usually a related topic, which helps improve the
research
Conclusive Research
• Conclusive research has a clear design in the methodology and intends
to answer the research question.
• The results of exploratory studies can be validated and quantified using a
conclusive research design.
Primary Research vs. Secondary Research
Surveys
• Surveys play a prominent role in the research method.
• It helps collect a vast amount of real-time data and helps the research
process. It is done at a low cost and is usually faster than any other
method.
• A researcher can conduct surveys in both quantitative and qualitative
methods.
• The researcher usually prefers quantitative surveys over qualitative ones
as they provide numerical outputs and accurate data.
Case Studies
• A common technique for qualitative analysis is the case study method,
which focuses on the in-depth study.
CRITERIA FOR GOOD RESEARCH
• The purpose of the research should be clearly defined and common
concepts be used.
• The research procedure should be defined in sufficient detail.
• The study design should be carefully planned
• The analysis of the data should be sufficient.
• The validity and reliability of the data should be checked carefully.
• Good research is systematic: It means that research is structured with
specified steps to be taken in a specified sequence in accordance with
the well-defined set of rules.
• Good research is logical:
• Good research is empirical: It means that the research is related
basically to one or more aspects of a real situation and deals with
concrete data that provides a basis for external validity to research
results.
• Good research is replicable: This characteristic allows research results to
be verified by replicating the study and thereby building a sound basis
for decisions.
RESEARCH PROCESS
8 steps in the research process are;
• Identifying the Research Problem
• Reviewing of Literature
• Setting Research Questions, Objectives, and Hypotheses
• Choosing the Study Design
• Deciding on the Sample Design
• Collecting Data From The Research Sample
• Process and Analyze the Collected Research Data
• Writing Research Report
Examples
• Scholarly journals
• Theses and dissertations
• Government documents
• Papers presented at conferences
• Books
• References quoted in books
• International indices
• Abstracts
• Periodicals
• The Africana section of the library
• Reference section of the library
• Grey literature
• Inter-library loan
• The British lending library
• The internet
• Microfilm
Tips on good review of literature
• Do not conduct a hurried review for fear of overlooking important
studies.
• Do not rely too heavily on secondary sources.
• Check daily newspapers as they contain very educative, current
information.
• Copy the references correctly in the first place so as to avoid the
frustration of trying to retrace a reference later.
• Do not only concentrate on findings, check on methodology and
measurement of variables
Step #4: Choosing the Study DesignThe research design is the blueprint or
framework for fulfilling objectives and answering research questions.
• It is a master plan specifying the methods and procedures for collecting,
processing, and analyzing the collected data.
There are four basic research designs that a researcher can use to conduct their
study;
• survey,
• experiment,
• secondary data study, and
• observational study.
RESEARCH GAP
DEFINITION OF RESEARCH GAP:
A research gap is a key problem or a question that has not been answered by
any of the existing studies within your area of research
TYPES OF RESEARCH GAPS IN LITERATURE REVIEW
Evidence Gap
• An evidence gap means there is no evidence or insufficient
evidence to address the research.
• This gap involves contradictions in the findings of the prior
research
Knowledge Gap:
• The knowledge gap is a common gap in prior research. There are
two settings where a knowledge gap might occur.
• First, knowledge may not exist in the actual field of theories and
literature from related research domains.
• Second, it might be the case that the results of a study differ from
what was expected.
Practical-Knowledge Conflict Gap
• When professional behaviour or practice deviates from already
conducted research reports and findings
Methodological Gap
• A methodological gap is the type of gap that deals with the conflict
that occurs due to the influence of methodology on research
results.
Empirical Gap
• It is also known as evaluation void gap
• It relates to study conclusion that need to be experimentally
confirmed
Theoretical Gap
• Theoretical gaps is the one that deals with the gaps between theory and
earlier research
Population Gap
• It deals with population which is not adequately represented or under
researched in previous research. Eg – gender ,age ,race
Research Protocol
➢ Study design would vary according to the research problem. Study design
should be mentioned clearly and should be appropriate to answer the research
question.
Study Setting:
➢ This includes information about the location where the study will be
conducted eg community, school, hospital etc and the facilities available.
Study Population:
• Selection of study population should be done very carefully. We should
describe all the steps and decisions made in order to select the subjects
to be studied as this affects the external validity of the study.
Inclusion criteria:
• Inclusion criteria are the ‘characteristics’ required for a participant to be
included in the study.
• The criteria may be based on factors such as age,gender, the type and
stage of a disease, previous treatment history, and co-morbid medical
conditions.
Exclusion criteria:
• Details of participants who are considered ineligible to participate, even
though they are eligible as per inclusion criteria, and justification for
their
Sampling:
• All steps adopted in the recruitment of study subjects should be
described. The samples should be representative of the population.
Steps taken to minimize sampling errors should be clearly mentioned.
Sample size calculation:
• Sample size should be calculated based on each primary objectives and
higher number should be taken. It should be adequate to answer the
research questions and test statistical hypotheses.
Identification of variables:
• Variables are values that can change from subject to subject. It is
important to identify the variables at the planning stage itself.
• Knowledge of the variables- independent variables,dependent variables,
background variables/confounders in a research project are essential in
refining the objectives.
Interventions:
• Detailed description about the
intervention(drug/device/procedure/investigation etc) must be given.
• For drugs and devices that are commercially available, mention the
proprietary names,manufacturer, chemical composition,
storage,compounding, dose, frequency and method of administration.
Measurement / Data collection:
• Instruments for measurement and method of measurement should be
given.
• Refer to the validity and reliability of the measurement instrument and
quality control measures should be specified.
Data Management and Statistical Analysis:
• This section should describe information on data access, confidentiality,
editing, coding,classification and tabulation of data.
• Statistical tests to be carried out in order to test each of the stated
hypotheses should be clearly outlined.
8. Time Line
• The protocol should specify the time that each phase of the project is
likely to take, along with a detailed month by month timeline for each
activity to be undertaken
9. Ethical and Legal Considerations
• This should explain how we are going to deal with ethical constrains to
the design and implementation of the study and ICMR guidelines could
be followed.
• It is not sufficient to state that we are going to respect these principles
but is to be explained how we are going to achieve that
10.Budget/Resources
• A brief outline of the budget requirement showing head wise
expenditure for the study should be given in this session.
• Eg: personnel, consumables, equipment, supplies,communication, funds
for patients, data processing,transportation etc.
• Justify the use of each item, consider the workplan of the study.
11.Dissemination activities/reporting
• Outline the planned publication/reporting strategy
• State how the results will be reported and who will be given access to
the data.
12.References
In this section list of the various references quoted while formulating protocol
may be listed in a
sequential manner.
Commonly used referencing systems are
• Harvard Style
• Name and publication year in text
• Alphabetical bibliography
• Vancouver Style
• Numbered references
• Continous referencing in text
• Make use of softwares like Zotero, Reference
• Manager or Endnote software.
12.Annexure
• The following documents should be appended
• Case Record Form
• Data collection tools/Questionaires
• Patient information form (in required languages)
• Consent form (in required languages)
• CV of investigators
• Letters of approval
Research ethics
Research ethics are the set of ethical guidelines that guides us on how scientific
research should be conducted and disseminated.
Research ethics govern the standards of conduct for scientific researchers It is
the guideline for responsibly conducting the research.
Research ethics committee/Institutional Review Board (IRB) reviews whether
the research is ethical enough or not to protect the rights, dignity and welfare
of the respondents.
Objective of research ethics
• To guard/protect human participants, their dignity, rights and welfare .
• To make sure that research is directed in a manner that assists welfares
of persons, groups and/or civilization as a whole.
• To inspect particular research events and schemes for their ethical
reliability, considering issues such as the controlling risk, protection of
privacy and the progression of informed consent.
Ethical principles of research
• Honesty
• Integrity
• Objectivity
• Informed consent
• Respect for person
• Benefience(maximize the benefits of participants)
• Non malefience/ protecting the subject
• Responsible publication
• Protecting anonymity
• Confidentiality
• Non-discrimination
• Openness
• Carefulness and respect for intellectual property
• Justice
Broad Categorization of Principles of Research Ethics
1. MINIMIZING THE RISK OF HARM
It is necessary to minimize any sort of harm to the participants. There are a
number of forms of harm that participants can be exposed to. They are:
• Bodily harm to contributors.
• Psychological agony and embarrassment.
• Social drawback.
• Violation of participant’s confidentiality and privacy
2. OBTAINING INFORMED CONSENT
• Only those IRB members who are independent of the clinical trial and
the Sponsor of the trial should vote / provide opinion in matters related
to the study.
• The IRB should perform its functions according to written standard
operating procedures, should maintain written records of its activities
and minutes of its meetings, and should comply with GCP and with the
applicable regulatory requirement(s).
• The investigator may provide information on any aspect of the trial, but
should not participate in the deliberations of the IRB or in the
vote/opinion of the IRB.
• The IRB should establish, document in writing, and follow its procedures,
which should include
• Determining its composition (names and qualifications of the members)
• Scheduling, notifying its members of, and conducting its meetings >
Conducting initial and continuing review of trials
• Determining the frequency of continuing review, as appropriate
• Specifying that no subject should be admitted to a trial before the IRB
issues
• Specifying that the investigator should promptly report to the IRB.
Deviations from, or changes of, the protocol to eliminate immediate
hazards to the trial subjects.
• Changes increasing the risk to subjects and/or affecting significantly the
conduct of the trial.
• All adverse drug reactions (ADRs) that are both serious and unexpected.
New information that may affect adversely the safety of the subjects or
the conduct of the trial
• Ensuring that the IRB promptly notify in writing the
investigator/institution concerning.
• Its trial-related decisions/opinions. The reasons for its
decisions/opinions.
• Procedures for appeal of its decisions/opinions
"Research is the activity that makes pharmacy a science rather than a technical
skill"
Goals of Research In Pharmacy
• Advancement of pharmacy practice
• Promoting human health and societal well-being
• Promoting quality in institutions & the community
• Promoting professional development (promotion...etc.)
Types of Pharmacy Research
• protocol development
• protocol research
• pharmacokinetic sample processing and analysis.
• data analysis
• preparation of regulatory reports and FDA applications
3) Healthcare Institutional Setting
• Research in the institutional setting is often self initiated within a
particular area of interest
• Type of research conducted is patient-focused through clinical drug
studies, evaluation of programs on patient outcomes, and economic
analysis
• Research opportunities often present themselves to clinical pharmacist
specialists who work in collaboration with other members of the health
care team
4) Industry
Provide opportunities to be involved in:
• Decision making and planning for new therapy development
• Collaborating with a variety of investigators on a national and
international level
• Participate in the administrative or management aspects of therapy
development
Training Required:
• Pharm.D. or Ph.D. are generally accepted as the minimum training
• Residency and fellowship training may be required
• The industry setting provides numerous opportunities for career
advancement, such as director positions, project manager and other
management roles
5) Government
• Research positions in government agencies e.g. Ministry of Health, Saudi
FDA
• Pharmacy researcher is a member of a large research team contributing
to the institute's overall research objectives and goals
• Entry-level positions may include pharmacy research specialist with
advancement opportunities to director or manager of laboratory or
research programs
Training Required:
• For an entry-level position, a BS/Pharm.D. degree, residency/fellowship
may be also required
• Advanced positions, such as study director, laboratory director, or
section head, require a Pharm.D., residency/ fellowship
• Solid clinical and research experience is desirable
• Career advancement in the government is based on job experience and
success in current research endeavors