A new graduate nurse attends a hospital in-service training focused on evidence-based nursing. Which of the following best describes the foundation of research?

In nursing practice, research provides the backbone of evidence-based care, which leads to improved patient outcomes, safer practices, and informed clinical decision-making.

Rationale for correct answer:

D. The scientific method is the core foundation of research. It provides a systematic, logical process that includes formulating a question, developing a hypothesis, collecting data, analyzing results, and drawing conclusions.

Rationale for incorrect answers:

A. Evidence: While evidence is the product or outcome of research, it is not the foundation. Evidence is gathered after a study has been conducted, analyzed, and interpreted using a structured approach.

B. Experience contributes to clinical judgment, but it is not the foundation of formal research. Relying solely on experience can introduce bias and inconsistencies. Research goes beyond individual experiences to test hypotheses under controlled and repeatable conditions.

C. Critical thinking is essential for interpreting and applying research findings, but it is not the foundational structure upon which research is conducted. It supports research utilization, not research development itself.

Take home points:

• The scientific method is the structured process that underpins all rigorous nursing research.
• Only the scientific method provides the systematic framework necessary to conduct high-quality research and generate evidence for clinical decision-making.

PICO is a mnemonic used to build focused clinical questions for evidence-based practice: Patient/Population/Problem, Intervention, Comparison, Outcome.

Rationale for correct answer:

D. Explicit descriptions of population of interest: P refers to the patient group or problem (e.g., adults with type 2 diabetes, postoperative hip fracture patients).

Rationale for incorrect answers:

A. Comparison to another similar treatment: That describes C (Comparison), not P.

B. Clearly defined, focused literature review: A literature review is a research activity, not the P element of PICO.

C. Specific identification of the desired outcome: That is O (Outcome), not P.

Take home points:

• A research critique is a balanced appraisal of strengths and weaknesses that informs evidence-based decisions.
• Use the critique to determine trustworthiness and clinical applicability, not just to summarize the article