Validity and Reliability Evidence of the Munro Scale for Perioperative Patients Part II: Construct Validity

Area of Science:

• Perioperative Medicine
• Nursing Research
• Patient Safety

Background:

• The Munro Pressure Injury Risk Assessment Scale for Perioperative Patients (Munro Scale) is a novel, three-phase risk assessment tool.
• Existing risk assessment tools may not adequately address the unique needs of perioperative patients.
• The scale's development aimed to provide a specialized instrument for this patient population.

Purpose of the Study:

• To establish the validity and reliability of the Munro Scale in a perioperative context.
• To refine the Munro Scale by reducing data into more manageable constructs.
• To provide evidence supporting the clinical utility of the Munro Scale.

Main Methods:

• Retrospective chart review of 630 risk assessments from two acute care hospitals.
• Exploratory and confirmatory factor analyses were employed to test the scale's underlying structure.
• Statistical analyses identified latent variables within the Munro Scale data.

Main Results:

• The validated model explained 95% of the variance in the cumulative final risk level (R² = .95).
• Six latent variables emerged, accounting for 56% of the total variance.
• The scale's psychometric properties were consistent across different language translations (Chinese and Turkish).

Conclusions:

• The study provides robust evidence supporting the validity and reliability of the Munro Scale.
• The findings advocate for the implementation of the Munro Scale in clinical perioperative practice.
• The scale's structure supports data reduction, enhancing its practical application.