1. EVIDENCE BASED PUBLIC HEALTH
Rift Valley University , College of Health Sciences, Department
of Public Health, Abichu Campus
By:
Terefe Bedasa (Bsc in PH, MPH in Nutrition student at RVU
E-mail:- nafrombc19@gmail.com
Addis Ababa , Ethiopia
12/7/2019
1

2.  Objectives
 Introduction
 Evidence based public health steps
 Importance of Evidence based Public Health
 Sources of evidence based public health
 Evidence based Medicine
 Summary
 References

3. Objectives
Explain the EBPH
Understanding the characteristics of EBPH
Discuss about variety of resource available for EBPH
Discuss the difference between Evidence based public health and evidence
base Medicine
Discuss the key elements of Evidence based public health

4. Evidence involves “the available body of facts or information
indicating whether a belief or proposition is true or valid’’.
Three types of scientific evidences
 Type-I descriptive /epidemiology
 Type -II Intervention
 Type -III Implementation

5. “The conscientious, explicit, and judicious use of current best
evidence in making decisions about the care of communities and
populations in the domain of health protection, disease prevention,
health maintenance and improvement.” (David Sackett)
 the care of communities and populations in the domain of
health protection, disease prevention, health maintenance
and improvement.”

6. “The development ,implementation, and evaluation of effective programs
and policies in public health through application of principles of scientific
reasoning, including systematic uses of data and information systems, and
appropriate use of behavioral science theory and program planning
models.” (Ross Bronwson)
“The process of integrating science-based interventions with
community preferences to improve the health of populations.”
(Kohatsu ND, Robinson JG,Torner JC. EBPH 2004

7. The development, implementation and evaluation of
effective programs and policies in public health
through application of principles of scientific
reasoning.

8.  Making decisions using the best available evidence (both
quantitative and qualitative research),
 Using data and information systems systematically,
 Applying program-planning frameworks (that often have a
foundation in behavioral science theory),
 Engaging the community in assessment and decision making,
 Conducting sound evaluation, and
 Disseminating what is learned to key stakeholders and decision
makers.

9. Despite the many achievements of public health to date, many
additional challenges still remain.
 To meet expectations for continuous improvement for instance to
achieve the MDGs a drive towards more widespread use of
evidence based strategies for effectively addressing current
challenges in public health is needed.
 Need credible filtered information to make informed
decisions
 Research evidence is valued. • So much information, too
little time!

10.  Develop an initial statement of the issue,
 Quantify the issue,
 Search the scientific literature and organize policy
information,
 Develop and prioritize program options,
 Develop an action plan and implement interventions
 Evaluate the program or policy

11. Quantify the issue Conduct literature
review
Develop program or
policy optionDefine the issue
Evaluate the program or
policy
Develop plan

12. Define the public health problem
Convert the information needs into focused questions
Performing a Searchable Public Health Question
PICO
 P– Population
 I – Intervention
 C - Comparison
O - Outcome

13.  Journal literature
 Books
 Conference proceedings & abstracts
 Dissertations & theses
 Unpublished scientific papers
 Government reports
 Policy statements, laws & regulations

14.  Surveillance data
Newsletters
 Teleconferences & webcasts
 Alert systems
 Internet sources
 Expert knowledge & opinion
Critically appraise the evidence

15. Decision for PH practices
Interventions
Programs
Policies
Expertise,
Knowledge
Social
values,
Politics,
Economics $
Best Evidence
from Research

16.  Search pathway 1.Evidence based guidelines
2 Systematic Reviews
3 Pre-formulated searches
4 Best and models practices
5 Public Health journals
6 Health and data statistics
7 Legislation and policy
8 Government policy

17. “The integration of best research evidence with clinical
expertise and patient values.”
(Sackett Dl et al;churchil livingstone 2014

18. Convert the need for info. into an answerable question
Track down the best evidence
Critically appraise that evidence
Integrate the appraisal with one’s clinical expertise and the
individual patient
Evaluate
 The difference between evidence based
Medicine and Evidence based public health
is listed below.

19. Prevention & health promotion
Focus on populations
Environment & human behavior interventions
Diverse workforce, variable education & certifications
Social sciences integral; clinical sciences peripheral to
education
Observational studies: case control & cohort studies

20. Focus on individuals
Diagnosis & treatment
Clinical interventions
Well-established profession, standardized education & certification
Clinical sciences integral; social sciences less emphasized
Experimental studies with control groups:

21. EBM has transformed medicine
EBM has fostered development of EBPH
EBPH continues to evolve
Increased community engagement

22. The future of the public's health in the 21st century. IOM 2002.
Practice for Public Health Project University of Massachusetts Medical School 2014
Sackett Dl; EMB how practice and teach EBM, churchill livingstone
2017
 Public Heath Web Portal: http://PHPartners.org

23. THANK YOU