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Clinical Inquiries. Evidence Tables. What is an Evidence Table?. A tabular description of the study, including: Citation Population and Setting Interventions, Exposures, Tests Outcomes measures Results Estimates of effect and Significance level Study quality. Why Use an Evidence Table?.

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Clinical Inquiries

Evidence Tables


What is an Evidence Table?

  • A tabular description of the study, including:

    • Citation

    • Population and Setting

    • Interventions, Exposures, Tests

    • Outcomes measures

    • Results

    • Estimates of effect and Significance level

    • Study quality


Why Use an Evidence Table?

  • They make your work easier

  • A manageable summary of studies

  • To compare studies by characteristics

  • Prevent errors of interpretation

  • Increase clarity of analysis

  • Plan a statistical analysis


Examples of Evidence Tables

  • NICI, Type 1 DM

  • OHSU, Drug Effectiveness Review Project

  • AHRQ EPC, Episiotomy Evidence Report

  • CRD Report, Chronic Fatigue Interventions


NICE-Type 1 DM


OHSU: Drug Evaluation Review Project, 1


OHSU: Drug Evaluation Review Project, 2


OHSU: Drug Evaluation Review Project, 3


AHRQ EPC Episiotomy Report

http://www.ahrq.gov/downloads/pub/evidence/pdf/episiotomy/episob.pdf


Interventions for Chronic Fatigue Syndrome

Bagnall, et al. NHS Centre for Reviews and Dissemination, CRD Report 22, 2002.


Customizable Evidence Tables for CIs

  • Three customizable evidence tables:

    • 1. Treatment or Prevention

    • 2. Prognosis or Etiology

    • 3. Diagnosis or Screening

  • Categories on tables are for general guidance, change as needed for your CI question


Constructing an Evidence Table

  • Columns

    • Populations

    • Interventions

    • Outcomes

  • Rows

    • Studies

    • Sub-groups of populations

    • Categories of interventions


Treatment or Prevention


Prognosis or Etiology


Diagnosis and Screening


Tables for CIs

  • Distilled evidence tables can be used in the CI

  • Tables can save room and give clear information to the reader

  • 3 Examples:

    • Effectiveness of diet and exercise to prevent DM

    • Signs and symptoms of pertussis

    • Harms and benefits of ASA for health adults


Example 1

Warnken, Kelsberg, Bryand. JFP, January 2005


Example 2

Brown and Anna. JFP, January 2005


Example 3

Werner. Kelsberg, Weismantel. JFP, February 2004.


Questions?

Contact the CI Project Manager

Lindsay Barnes

[email protected]

(573) 256-2066


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