Quality Improvement Metrics Flashcards

Which statistical tool is used in healthcare quality improvement to distinguish between common cause and special cause variation?

Answer: Control chart

Control charts use statistical control limits to differentiate random common cause variation from assignable special cause variation.

A hospital's 30-day readmission rate for heart failure patients is 22%. If the national benchmark is 18%, what is the performance gap?

Answer: 4 percentage points

The performance gap is 22% - 18% = 4 percentage points above the national benchmark.

In the PDSA (Plan-Do-Study-Act) cycle, what is the primary purpose of the 'Study' phase?

Answer: Analyze data to determine if the change produced improvement

The Study phase involves analyzing data collected during the Do phase to evaluate whether the tested change resulted in the expected improvement.

Which metric best captures the overall burden of preventable harm in a hospital setting?

Answer: Adverse events per 1,000 patient days

Adverse events per 1,000 patient days is a standardized rate that accounts for patient volume and captures preventable harm burden.

What does a Six Sigma process capability level indicate about defect rates?

Answer: 3.4 defects per million opportunities

Six Sigma represents a process producing no more than 3.4 defects per million opportunities, indicating near-perfect quality.

Which of the following is an example of a structural quality measure in Donabedian's model?

Answer: Percentage of physicians board-certified

Structural measures assess the settings and resources available for care, such as provider credentials, staffing ratios, and facility capabilities.

A care team wants to reduce medication errors. They use a tool that visually displays the frequency and cumulative percentage of error types. Which tool are they using?

Answer: Pareto chart

A Pareto chart ranks categories by frequency and shows cumulative percentage, helping identify the 'vital few' causes responsible for most errors.