CMRT Data Analytics & Reporting 2 — Questions and Answers
Question 1: Which metric is most commonly used to measure the average length of stay (ALOS) in a hospital?
- Total patient days divided by total discharges (Correct answer)
- Total admissions divided by total beds
- Total discharges divided by available bed days
- Total occupied beds divided by total admissions
Correct answer: Total patient days divided by total discharges
ALOS is calculated by dividing total inpatient days by the number of discharges (including deaths) during the same period.
Question 2: A health information manager notices that the case-mix index (CMI) dropped significantly after a coding audit. What is the most likely explanation?
- Upcoding was corrected during the audit (Correct answer)
- More complex patients were admitted
- The hospital expanded its service lines
- Discharge data was entered late
Correct answer: Upcoding was corrected during the audit
A drop in CMI after an audit typically indicates that previously overcoded (upcoded) diagnoses were corrected to more accurate, lower-weighted codes.
Question 3: Which type of data display is best suited for showing the distribution of patient ages across a population?
- Histogram (Correct answer)
- Pie chart
- Run chart
- Scatter plot
Correct answer: Histogram
A histogram displays the frequency distribution of continuous data like age ranges, making it ideal for visualizing population age distribution.
Question 4: In health data analytics, what does the term 'data granularity' refer to?
- The level of detail captured in a data element (Correct answer)
- The speed at which data is processed
- The accuracy of diagnostic codes assigned
- The number of records in a database
Correct answer: The level of detail captured in a data element
Data granularity refers to the level of detail or precision at which data is stored, such as recording time to the minute versus just the hour.
Question 5: Which statistical measure is most resistant to the influence of extreme outliers in a dataset?
- Median (Correct answer)
- Mean
- Mode
- Range
Correct answer: Median
The median, being the middle value, is not affected by extreme high or low values (outliers) the way the mean is.
Question 6: A hospital's readmission rate for heart failure patients is 22%. The national benchmark is 15%. What type of reporting would best communicate this gap to hospital leadership?
- Benchmarking report comparing facility rate to national standard (Correct answer)
- Annual statistical report listing all diagnoses
- A discharge summary for each readmission
- A frequency distribution of all cardiac DRGs
Correct answer: Benchmarking report comparing facility rate to national standard
A benchmarking report directly compares the facility's performance metric against an external standard, making performance gaps clear to leadership.
Question 7: Which data quality dimension is being assessed when verifying that every required field in a patient record is completed?
- Completeness (Correct answer)
- Accuracy
- Timeliness
- Consistency
Correct answer: Completeness
Completeness measures whether all required data elements are present in the record, ensuring no mandatory fields are left blank.
CMRT Data Analytics & Reporting 2
Which metric is most commonly used to measure the average length of stay (ALOS) in a hospital?