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EVIDENCE BASED PROGRAMS Dr. Carol AlbrechtUtah State Extension Assessment Specialistcarol.albrecht@usu.edu
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Evidence Based Programs Relatively new approach Program decisions are based primarily on scientific method and scientific evidence Use best evidence available to make decisions about program Recognizes that knowledge is provisional and subject to refutation
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Evidence Based Programs combines (1) Program Manager’s Expertise, (2) Client Attributes, and (3) Research Findings Research Findings Client Attributes Program Manager’s Expertise EBP
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Best Research Evidence Available Can Be Found in Current Literature Step 1 – Review The Literature “Track down” the evidence- ongoing process Note Inconsistencies Note research suggesting some interventions are ineffective Step 2 – Critique the Literature You Find Examine methods used*
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Client Attributes Take values, concerns, expectations of client into consideration Involve clients in decision making process Determine if this program will “fits” your client. Not “one size fits all” situation Consider race, gender, idiosyncratic characteristics
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Program Manager Expertise Use Common Sense Avoid “fallacies” which include Overgeneralization - Stereotyping Selective Perception/Observation Ex-post Facto Hypothesizing Provide alternative explanation after the “study” Accepting “new” as better Accepting “traditional” as better
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How to Complete a Literature Review Step 1 – Formulate a Question Step 2 – Search for Evidence Step 3 – Critically Appraise Relevant Studies Step 4 – Apply the Literature to Your Question and/or Program Step 5 – Conduct Your own Research
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Step 1 – Formulate a Question What objectives do you want to accomplish? What intervention is necessary to reach objectives? Does Intervention A work? Is Intervention A cost effective? Does Intervention A work better than Intervention B? Does Intervention A work for this type of client? Does intervention A work in this kind of situation?
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Useful Acronym for Formulating Question Use acronym CIAO Client characteristics Intervention being considered Alternative intervention being considered (if any) Outcome of intervention (does it work?)
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Example Client Characteristics If children involved in 4-H Intervention …..personally interact with a mentor for several years….. Alternative Intervention …..or communicate with a mentor over the internet….. Outcome …..are they more likely to seek post-high school education?
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Step 2 – Search for the Evidence Helpful “hints” to finding articles Use Google or Google Scholar and type in correct search terms Combine general terms (e.g., volunteers, evaluation etc.) With more specific terms (i.e., grades in high school, crop yield etc.) Top Down and Bottom Up Searches (Mullen 2006) Top Down – Find Articles/Books that have Compiled the Literature (i.e., meta-analysis on your topic) Bottom Up – Find a very recently published article and look at references.
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Examples of Resources for “Top Down” Searches *Campbell collaboration: http://www.campbellcollaboration.org/index.htmlhttp://www.campbellcollaboration.org/index.html **Cochrane Collaboration: http://www.cochrane.orghttp://www.cochrane.org Substance Abuse: http://nrepp.samhsa.gov/htpp:/www.modelprograms.samhsa.gov/index. htm Crisis Intervention and Domestic Violence National Resource: http://www.crisisinterventionnetwork.com http://www.crisisinterventionnetwork.com Expert Consensus Guidelines series: http://www.psychguides.comhttp://www.psychguides.com National Guidelines Clearinghouse http://www.guidelines.govhttp://www.guidelines.gov National Institute on Drug Abuse: http://www.nida.nih.gov/http://www.nida.nih.gov/ Substance Abuse and Mental Health Services Administration: http://www.samhsa.govindex.aspx * Focuses on Social Welfare, Education and Criminal Justice **Focuses on Health Care Interventions
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Step 3 – Critically Appraise Relevant Articles Emphasis Should be on Methods Used to Collect Empirical Information
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How to Complete a Literature Review Step 1 – Formulate a Question Step 2 – Search for Evidence Step 3 – Critically Appraise Relevant Studies Step 4 – Apply the Literature to Your Question and/or Program Step 5 – Conduct Your own Research
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Step 4 – Apply the Literature to Your Research Question Which intervention currently has the best empirical support? Is the situation same/similar to yours? Are the participants in the study the same or similar to the ones in your program/study?
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Step 5 – Conduct Your Own Research Use Literature Review to help you develop valid and reliable indicators. Use Literature Review to help you determine your sampling technique and sample size. Use the Literature Review to help you determine the most appropriate type of data collection. Use the Literature Review to help you determine ways you can further contribute to the research (i.e., what is missing?) Evaluate impact of program on your participants
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Concerns About Evidence Based Programs Merely Cost Cutting Have to use the methods “in stock” Evidence Based May not be Applicable Leads to rigid implementation Your participants may be different Evidence is in Short Supply – not enough research Real World Obstacles Hinder Implementation of Programs Time and money are scarce Devalues Qualitative Research Argument that “Empirical Evidence” is not obtainable
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Suggestions for Appraising Journal Articles in the Literature Step 1 – Identify Purpose Stated purpose of article This should appear in first paragraph(s). Step 2 – Literature Review Is it adequate? They should have at least 15 references.
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Appraising Literature Step 3 - Identify objectives/outcomes Do they identify and define their outcomes/objecties It must be clear and succinct. They must be clearly related to the implementation of program. How do they measure their concepts/outcomes? Are measurements valid? (face validity) Are measurement reliable (consistent) Could you repeat study?
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Appraising Literature Step 4 – Appraising Sampling Technique It must be clearly specified? What is their unit of analysis? Do you know exactly how these units will be selected? It must be appropriate? Does the sampling technique “fit” with the data collection technique? Do they draw valid conclusions based on sampling technique? Note – if they generalize they must have random sample
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Remember the Sampling Techniques Random Sample – can generalize Simple or Systematic Random Multi-stage Cluster Stratified Random NonRandom Sample – cannot generalize Theoretical or Purposive Snowball Convenient
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Appraising Literature Step 5 – Research Design/Data Collection Technique It must be clearly specified? Do you know exactly how they will collect their data? It must be appropriate Keep in mind the strengths and weaknesses of the different research designs/data collection techniques
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Remember Research Designs or Data Collection Techniques Data Collection/Research Design Survey or Questionnaire Secondary Experimental Lab Experiments Quasi – Field Experiment/Trial Field Research (Qualitative) Participant Observation Content Analysis Intensive Interviews Case Studies
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Appraising Literature Step 6 - Critique Tables/Graphs/Charts Their analysis must be correct? Did they include descriptive statistics of the sample? Did they include inferential statistics and discuss level of significance? Are their tables constructed correctly? They must be interpreted accurately. Does the text accurately describe the data? They should look professional Do they provide sufficient information? Do they tell you how they measured the indicators used in the tables?
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Appraising Literature Step 7 – Summary and Conclusions Do they accurately summarize their research? Do they identify strengths and weaknesses? Do they acknowledge limitations? Do they make suggestions for future research?
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Easy Steps 1.Identify Purpose 2.Critique Literature Review 3.Identify Success 4.Sample Technique 5.Data Collection Technique/Research Design 6.Tables and Charts 7.Summary and Conclusions
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Contact Information Dr. Carol Albrecht Assessment Specialist Utah State University 979-777-2421 Carol.albrecht@usu.edu
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