week 1 EBP In-Depth Notes on Evidence-Based Practice (EBP)

Understanding Evidence in Evidence-Based Practice (EBP)

  • Definition of Evidence
    • Evidence refers to research findings that inform decisions about healthcare.
    • Derived from systematic studies investigating:
    • Treatment effectiveness
    • Causes of health conditions
    • Patient experiences
  • Research Evidence in EBP
    • Used by practitioners to justify clinical decisions.
    • Similar to gathering information for significant purchases (e.g., buying a car).
    • Need reliable sources of information to inform choices.

Key Principles of Evidence-Based Practice

Principle 1: Basis for Clinical Decisions
  • Decisions should be supported by:
    1. Best Research Evidence
    • Valid, clinically relevant research from both internal environments and external studies.
    1. Professional and Clinical Expertise
    • Skills and experience that identify a patient’s health state, risks, and intervention benefits.
    1. Information from the Practice Context
    • Consider clinical resources available, environment, and patient comorbidities.
    1. Client’s Values and Circumstances
    • Integrate patients' rights, values, and preferences into decisions to ensure personalized care.
EBP Framework
  • Equal weight is given to research evidence, clinical expertise, practice context, and patient values.
  • EBP avoids a one-size-fits-all approach, emphasizing tailoring practices to individual patient needs.
Principle 2: Ongoing Professional Development
  • Key for health practitioners to stay current with new knowledge.
  • Adaptability to changes in healthcare practice is vital for longevity in profession.

Five Steps of Evidence-Based Practice

  1. Ask an Answerable Question
    • Identify the need for information relevant to clinical practice.
  2. Acquire Relevant Evidence
    • Conduct database searches for research studies and systematic reviews that answer the question.
  3. Appraise Acquired Evidence
    • Critically evaluate the quality and relevance of the evidence found.
  4. Apply Evidence to Practice
    • Integrate the best evidence with clinical experience and patient preferences in decision-making.
  5. Assess and Set Learning Goals
    • Reflect on the application of steps 1-4, aiming for continuous improvement in EBP efficiency.

Types of Research in Health

  • Quantitative Research

    • Tests theories/hypotheses using measurable data.
    • Relies on statistics to determine relationships (e.g., observing cats’ TV habits).
    • Measurement defines variables and quantifies health phenomena.

  • Qualitative Research

    • Uses inductive reasoning to understand phenomena from an insider's perspective.
    • Answers questions on why/how rather than how much.
    • Important for understanding the experiences of living with health conditions.

  • Mixed Methods Research

    • Combines quantitative and qualitative research methodologies.

Systematic Reviews

  • A structured approach to synthesizing research.
  • Must follow strict guidelines to ensure reliability:
    • Define clear questions.
    • Systematic literature searches.
    • Critical appraisal of studies.

Narrative Reviews

  • Less structured than systematic reviews and varies in quality.
  • Risk of bias influences conclusions.

Importance of Quality in Research

  • Assessing evidence quality is necessary before application in practice.
  • Internal Validity: Confidence in findings’ correctness in quantitative research.
  • External Validity: Ability to generalize findings to a larger population.
  • Measurement Validity and Reliability:
    • Validity: Measurement must accurately reflect what it intends to measure.
    • Reliability: Consistency of measurement across instances.