CPHQ Health Data Analytics 3 — Questions and Answers
Question 1: Which type of chart is best suited for monitoring a process rate (proportion) such as the percentage of patients who develop a pressure injury?
- X-bar and R chart
- P-chart (Correct answer)
- C-chart
- I-MR chart
Correct answer: P-chart
The P-chart (proportion chart) is designed for monitoring the fraction or percentage of defectives in subgroups of varying sizes.
Question 2: A healthcare quality professional needs to display the frequency of different types of medication errors by category. Which visualization is most appropriate?
- Scatter diagram
- Box plot
- Pareto chart (Correct answer)
- Control chart
Correct answer: Pareto chart
A Pareto chart displays frequency by category in descending order and includes a cumulative line, helping identify the 'vital few' causes.
Question 3: Inter-rater reliability in chart abstraction is best measured using which statistic?
- Pearson correlation coefficient
- Cohen's kappa (Correct answer)
- Cronbach's alpha
- Intraclass correlation coefficient (ICC) for continuous data
Correct answer: Cohen's kappa
Cohen's kappa measures agreement between two raters on categorical data while correcting for agreement that would be expected by chance alone.
Question 4: In the context of CPHQ, what is the key distinction between a 'sentinel event' and a 'near miss'?
- Sentinel events require regulatory reporting; near misses do not
- Sentinel events reached the patient and caused serious harm; near misses did not reach or harm the patient (Correct answer)
- Sentinel events involve medication errors; near misses involve procedural errors
- Sentinel events are reviewed by the board; near misses are reviewed by staff
Correct answer: Sentinel events reached the patient and caused serious harm; near misses did not reach or harm the patient
A sentinel event is an unexpected occurrence resulting in death or serious harm, while a near miss (close call) is a process failure that did not reach the patient or caused no harm.
Question 5: When analyzing patient fall data, a quality team notices the rate is higher on the night shift. This finding should be addressed first by:
- Implementing a hospital-wide fall prevention protocol immediately
- Drilling deeper into night-shift-specific factors through stratification and fishbone analysis (Correct answer)
- Reporting the variance to the state health department
- Comparing the rate to national benchmarks before taking action
Correct answer: Drilling deeper into night-shift-specific factors through stratification and fishbone analysis
Further stratification and root cause analysis of the night shift subgroup is needed to identify the specific contributing factors before implementing targeted interventions.
Question 6: Which term describes the consistency of a measurement tool in producing the same results under the same conditions?
- Validity
- Sensitivity
- Reliability (Correct answer)
- Specificity
Correct answer: Reliability
Reliability refers to the degree to which a measurement produces consistent, reproducible results when applied repeatedly under the same conditions.
Question 7: A quality improvement team is using PDSA cycles. What is the PRIMARY purpose of the 'Study' phase?
- Implement the change on a larger scale
- Analyze data collected during the 'Do' phase and compare to predictions (Correct answer)
- Identify the problem and set aims
- Standardize the successful change into policy
Correct answer: Analyze data collected during the 'Do' phase and compare to predictions
The Study phase involves analyzing the data gathered during implementation and comparing the results against the predictions made in the Plan phase.
CPHQ Health Data Analytics 3
Which type of chart is best suited for monitoring a process rate (proportion) such as the percentage of patients who develop a pressure injury?