defining evidence. session objectives define evidence-based public health practice discuss two...
TRANSCRIPT
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Defining Evidence
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Session Objectives
• Define evidence-based public health practice
• Discuss two important targets of evidence-based intervention
- behavior of individuals and groups
- environment
• Discuss benefits and challenges associated with using evidence
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What do you think of when you hear “evidence-based”?
Question
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What is evidence?
“the available body of facts or information indicating whether a belief is true or valid”
Brownson R.C., Baker, E.A., Leet T.L., Gillespie, K.N. (2003). Evidence-Based Public Health. New York: Oxford University Press.
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What is evidence in public health?
• Personal experience
• Word of mouth
• Program evaluation
• An intervention research study
• Systematic reviews of multiple intervention studies
• Surveillance data
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Research and Practice Create Evidence
• Evidence derived from research:
– Intervention that has been tested in a research study
– Systematic review of multiple studies
– Policy analysis
• Evidence derived from practice:
– Intervention or policy developed, implemented and evaluated in an organization, community or geographic region
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Social Ecological Model
• Health is affected by a variety of factors including:
– individual characteristics
– attitudes and behaviors of peers
– physical surroundings / environment
– policies in community
• Public health approaches should include activities that produce change at multiple levels of the model
– individuals
– environments
– policies
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Social Ecological Model
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Different Evidence-based Options for Promoting Public Health
Environment or Behavior
Strategies(recommended after systematic review)
PoliciesPackaged Programs
Evidence-based Approaches
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Packaged Programs
Interventions that include instructions and specify materials needed to implement with success
Pool Coolavailable on RTIPS
and at www.poolcool.org
Body and Soulavailable on RTIPs
Pathways to Freedomavailable on RTIPs and
the CDC’s website
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Pool Cool Sun-Safety Program • Aim: Raise awareness, motivation and sun protection practices to
reduce skin cancer
• Setting: swimming pools
• Target audience: children enrolled in swimming lessons
• Program components: • Eight 5-minute lessons during swim class
• Five optional sun-safe Poolside Activities
• Sun safety signs
• Program materials: • Developed in efficacy and diffusion trials and process evaluations
• Available for free, online
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Policies
• A system of laws, regulatory measures, courses of action, and funding priorities concerning a given topic– Public policy: regulation set by government or
local authorities (e.g., laws for coverage, ordinances)
– Organizational policy: organizational rule or regulation (e.g., worksite health plans, patient navigation services)
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Public Policy
• North Carolina enacted legislation that prohibits the purchase of tobacco products by persons under the age of 18
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Organizational Policy
Food Item Recommendation Rationale Examples of what would be IN and OUT
Beverages Contain 100% fruit juice with no added sweetener
Fruits/vegetables contain necessary nutrients
IN: Vegetable and fruit juice
Snacks, sweets, and sides
Sugar: No more than 35% by weight
Eliminate foods that •Are high in calories•Are low in nutrients•Promote dental caries
IN: Some granola bars, trail mix, animal crackers, fat-free fudge bar, frozen fruit barOUT: Some granola bars, some cookies, all candy
A school or workplace implements Recommendations for Cafeteria, Vending, and Break Room Food Standards in Utah Workplaces
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Evidence-based Strategies
• Broad recommendation based on systematic review of multiple studies
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The Community Guide: A Source of Evidence-based
StrategiesAim: Increase physical activity
Environmental strategy:Point-of-decision prompts
Program Material:
Aim: Increase CRC screening
Individual strategy: Small media
Program Material:
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Discussion
• What are some challenges you have encountered in using evidence?
• How have you addressed those challenges?
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Take Home Points: Advantages of Evidence-based Options
• Adds value to a grant application
• Saves time and resources during planning and implementation
• Helps focus your evaluation
• Increases your likelihood of success
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Take Home Points
• There are different types of evidence-based approaches (i.e., packaged programs, policies, strategies)
• Evidence-based approaches can:
• Increases your likelihood of success
• Saves time and resources instead of new program development
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Questions?