CPHQ Performance and Process Improvement 5 — Questions and Answers
Question 1: A quality team is evaluating a new fall prevention protocol. After implementation, they want to determine if the improvement is sustained over 18 months. The BEST tool to monitor this is:
- Fishbone diagram
- Control chart (Correct answer)
- Affinity diagram
- FMEA
Correct answer: Control chart
Control charts track process performance over time and can detect whether improvements are sustained or if the process has shifted or regressed.
Question 2: The 'Define' phase of DMAIC primarily involves:
- Collecting baseline data on process performance
- Clearly articulating the problem, scope, and project goals (Correct answer)
- Identifying root causes of the defect
- Piloting and implementing solutions
Correct answer: Clearly articulating the problem, scope, and project goals
The Define phase establishes the project charter, problem statement, scope, goals, and stakeholders before data collection begins.
Question 3: In a healthcare setting, 'process capability' refers to:
- The maximum number of patients a unit can admit
- The ability of a process to consistently produce outputs within specified limits (Correct answer)
- The number of staff trained on a specific procedure
- The financial capacity to fund improvement projects
Correct answer: The ability of a process to consistently produce outputs within specified limits
Process capability measures how well a stable process performs relative to its specification limits, often expressed as Cp or Cpk indices.
Question 4: A quality improvement team identifies that patients frequently misunderstand discharge instructions. Using the '5 Whys' technique, they ask 'why' repeatedly. This method is BEST suited for:
- Quantifying the frequency of patient complaints
- Drilling down to the root cause of a problem through iterative questioning (Correct answer)
- Comparing multiple hospitals' discharge processes
- Calculating the cost of poor quality
Correct answer: Drilling down to the root cause of a problem through iterative questioning
The 5 Whys is a root cause analysis technique that iteratively asks 'why' to move from symptoms to underlying root causes of a problem.
Question 5: Which of the following BEST describes 'common cause variation' in a healthcare process?
- Variation caused by a specific identifiable event, such as equipment failure
- Inherent, random variation that is expected within a stable process (Correct answer)
- Variation caused by seasonal influenza outbreaks
- Variation resulting from a new staff member's performance
Correct answer: Inherent, random variation that is expected within a stable process
Common cause variation is the natural, random variability inherent in any stable process and cannot be attributed to a specific assignable cause.
Question 6: An organization implements a new sepsis bundle protocol. Three months later, sepsis mortality drops significantly. To confirm the improvement was caused by the bundle and not an external factor, the team should:
- Survey staff about their confidence in the protocol
- Use a control group or interrupted time series analysis to attribute causation (Correct answer)
- Immediately spread the protocol system-wide
- File a best practice submission with The Joint Commission
Correct answer: Use a control group or interrupted time series analysis to attribute causation
Rigorous evaluation methods such as control groups or interrupted time series analysis help distinguish the effect of the intervention from confounding factors or temporal trends.
Question 7: In the context of CPHQ exam domains, 'benchmarking' is used in performance improvement to:
- Set the minimum passing score for competency exams
- Compare an organization's performance against best-in-class standards or peers (Correct answer)
- Document the physical layout of clinical workspaces
- Measure the financial return on improvement investments
Correct answer: Compare an organization's performance against best-in-class standards or peers
Benchmarking compares an organization's processes and outcomes to those of high-performing peers or national standards to identify performance gaps and improvement opportunities.
CPHQ Performance and Process Improvement 5
A quality team is evaluating a new fall prevention protocol.
After implementation, they want to determine if the improvement is sustained over 18 months.
The BEST tool to monitor this is: