EBM for the busy Clinician

Gil C. Grimes, MDEBM Working Group, Department

Family MedicineScott & White

Objectives Levels of Evidence DOE vs. POEMs Sources for Evidence Incorporating EBM into Precepting Modeling behavior (dealing with Pharma)

First a few Questions I am familiar with Evidence Based

Medicine? Yes or No

I am familiar with or have used the following databases.

What is EBM? Simply put it is the integration of

research evidence with clinical expertise and patient values.

EBM will allow us to do more good than harm

Patients want to know the following “Will it make me live better” “Will it make me live longer”

Levels of Evidence This is a method for grading journal

articles, guidelines etc. This is not “universal” AAFP uses Level A, B, C Centre for EBM Oxford uses 1,2,3

Focuses on the type of article and quality Therapy/Prevention/Etiology/Harm, Diagnosis,

Prognosis Either way is just fine We will begin with the alphabet first…

Level A Randomized controlled trial/meta-analysis

High-quality randomized controlled trial (RCT) that considers all important outcomes.

High-quality meta-analysis (quantitative systematic review) using comprehensive search strategies.

Level B Other study types and some guidelines

Well-designed, nonrandomized clinical trial. Nonquantitative systematic review with appropriate

search strategies and well-substantiated conclusions. Lower quality RCTs Clinical cohort studies and case-controlled studies with

nonbiased selection of study participants and consistent findings.

Other evidence, such as high-quality, historical, uncontrolled studies, or well-designed epidemiological studies with compelling findings, is also included.

Level C

Consensus/expert opinion Consensus viewpoint or expert opinion. May represent the only evidence that is out there Use with caution

Level 1 Therapy/Prevention/Etiology/Harm:

1a: Systematic reviews (with homogeneity ) of randomized controlled trials

1b:Individual randomized controlled trials (with narrow confidence interval)

1c:All or none randomized controlled trials Prognosis:

1a: Systematic review (with homogeneity) of inception cohort studies; or a clinical rule validated on a test set.

1b: Individual inception cohort study with > 80% follow-up

1c:All or none case-series

Level 2 Therapy/Prevention/Etiology/Harm:

2a: Systematic reviews (with homogeneity) of cohort studies 2b: Individual cohort study or low quality randomized

controlled trials <80% follow-up 2c: 'Outcomes' Research

Prognosis 2a:Systematic review (with homogeneity) of Level >2

diagnostic studies 2b: Independent blind or objective comparison; study

performed in a set of non-consecutive patients, or confined to a narrow spectrum of study individuals (or both) all of whom have undergone both the diagnostic test and the reference standard; a diagnostic clinical rule not validated in a test set.

Level 3, 4, & 5 Therapy/Prevention/Etiology/Harm:

3a: Systematic review (with homogeneity) of case-control studies

3b: Individual case-control study 4: Case-series (and poor quality cohort and case-

control studies) 5: Expert opinion without explicit critical

appraisal, or based on physiology, bench research or 'first principles'

Where’s the beef? Levels of evidence

are good….

What I want to know is how this will work for me.

Friends the path requires moving from DOE to POE…

Disease Oriented Evidence Most common type of

evidence found in research journals

Important to our understanding of disease

Responsible for many therapeutic advances

Intended for a research audience

Pathophysiology Pharmacology Etiology

Patient Oriented Evidence Uncommon in

most journals Outcomes patients

care about Mortality Morbidity Quality of Life Cost Harm

POEMs Patient-Oriented

Evidence that Matters

Addresses a clinical problem encountered by primary care physicians

Uses patient-oriented outcomes

Potential to change our practice if valid and applicable

DOES vs. POEMs

The Numbers…. 6 month survey of 90 journals 8,047 articles 213 POEMs

97% DOEs and other material

2.6% POEMs

A few examples A 72 year old male with COPD and CAD

presents with angina. In treating him a Beta blocker is contraindicated.

True False

False Salpeter SS, Ormiston T, Salpeter E, Poole P, Cates C. Cardioselective

beta-blockers for chronic obstructive pulmonary disease (Cochrane Review). In: The Cochrane Library, Issue 2, 2003. Oxford: Update Software click here

Examples A 23 year old female presents to the ER

with RLQ pain and an acute abdomen. The surgeon is 30 minutes away. Pain medication is contraindicated until the surgeon examines the patient.

True False

False Thomas SH, Silen W. Effect on diagnostic efficiency of

analgesia for undifferentiated abdominal pain. Br J Surg 2003; 90:5-9.click here

Examples When treating mild to moderate alcohol

withdrawal (not DT),benzodiazipines are the most effective therapy in helping with detox.

True False

False Malcolm R, Myrick H, Roberts J, Wang W, Anton RF,

Ballenger JC. The effects of carbamazepine and lorazepam on single versus multiple previous alcohol withdrawals in an outpatient randomized trial. J Gen Intern Med 2002; 17:349-55.click here

Examples Tight glycemic control of gestational

diabetics improves outcomes for mother and child.

True False

False Garner P, Okun N, Keely E, et al. A randomized

controlled trial of strict glycemic control and tertiary level obstetric care versus routine obstetric care in the management of gestational diabetes: a pilot study. Am J Obstet Gynecol 1997;177:190-5.click here

So where do I find this? You could search the literature

Yeah like you have that much time!

You could ask you colleagues Expert opinion Level C

You could familiarize yourself with one or two good sources That sounds pretty good…

Usefulness equation Usefulness= relevance x validity

work

Go for sources that have done the work for you

Drilling for the Best Information

Cochrane Library

POEMs, InfoRetriever,ACP J ournal Club

TRIPS, DynaMed,Bandolier, DARE

Clinical EvidenceClinical Inquiries

Up-to-Date, 5-Minute Clinical Consult,Textbooks

Usefu

lness

J ournals/ Medline

Systematic Reviews

Summarized Evidence-Referenced Resources

Research Articles

Other Sources

Cochrane It is an international organization

that aims to help people make well informed decisions about health care by preparing, maintaining and ensuring the accessibility of systematic reviews of the effects of health care interventions.

Cochrane The Collaboration is built on ten

principles: collaboration building on the enthusiasm of individuals avoiding duplication minimizing bias keeping up to date striving for relevance promoting access ensuring quality continuity enabling wide participation

Cochrane Focus is on therapy Excellent resource Solid source Degree of scrutiny limits some

applicability Let’s look

Clinical Evidence Published by BMJ Collects evidence on a wide variety

of topics You are eligible for their book, and

free access to their web site Let’s look

InfoRetriever Founded by three Family

Physicians, a PharmD and a Psychologist

Goal to improve the health and lives of people by providing patient-oriented evidence that matters in a rapid and accessible form

I use this database daily Let’s Look

TRIP Database TRIP was created in 1997 to bring

together all the 'evidence-based' healthcare resources available on the Internet.

Excellent resource Allows focused PubMed search if all

else fails Tracks your usage for educational

purposes Let’s Look

PubMed Clinical Queries PubMed is a Huge database Typical searches are tough Clinical Queries makes that

easier Let’s Look

Journal Sources Journal of Family Practice Journal Watch from NEJM InfoPOEMs ACP-Journal Club Relevance before Validity

Relevance Slice the bedside stack

Is this something that is common to my practice?

Is it an outcome my patients would care about?

If the outcome is true would I have to change my practice?

If relevant then examine for validity

Mentoring Every Question

is a teachable moment

If you look up two questions with the student they will learn

It should not slow you down

My Experience New MSIII on his second rotation Lot’s of questions InfoRetriever answered 90% We discussed outcomes No one had discussed outcomes with him

to that point It added 15 minutes to my morning and

afternoon He reports that he continues to utilize the

EBM tools demonstrated

Pharma Interactions Modeling behavior for students Demonstrating the sales methods

being utilized Real life scenarios

Handhelds This is the key to just in time

information InfoRetriever can run off Palm or

Microsoft handheld (click here) Very functional Gives you decision tools in your

hand when you need them

Handouts List of useful websites Password for InfoRetriever for

TAMU Worksheets for reviewing articles Worksheet for pharm reps My contact information

Questions?