HAC Population Health Analytics 2 — Questions and Answers
Question 1: Which metric best measures the burden of premature mortality in a population?
- Years of Potential Life Lost (YPLL) (Correct answer)
- Crude mortality rate
- Case fatality rate
- Proportionate mortality ratio
Correct answer: Years of Potential Life Lost (YPLL)
YPLL calculates the years lost due to deaths occurring before a defined age threshold, capturing premature mortality burden.
Question 2: A health system wants to identify patients at high risk for avoidable hospitalization. Which approach is most appropriate?
- Predictive risk stratification using claims and clinical data (Correct answer)
- Reviewing last year's ED visit logs manually
- Sorting patients by diagnosis code frequency
- Calculating average length of stay by payer
Correct answer: Predictive risk stratification using claims and clinical data
Predictive risk stratification combines multiple data sources to proactively identify high-risk individuals before acute events occur.
Question 3: What does the Index of Disparity (ID) measure in population health analytics?
- The average difference in health rates across subgroups relative to the reference group (Correct answer)
- The total number of disparate health conditions in a region
- The ratio of insured to uninsured individuals in a population
- The geographic distance between health facilities
Correct answer: The average difference in health rates across subgroups relative to the reference group
The Index of Disparity summarizes the magnitude of health inequity by averaging deviations of subgroup rates from a reference rate.
Question 4: Which social determinant domain is most directly linked to food insecurity screening in a clinical population health program?
- Economic stability (Correct answer)
- Education access
- Neighborhood environment
- Social and community context
Correct answer: Economic stability
Economic stability encompasses income, employment, and food security, making it the primary SDOH domain for food insecurity interventions.
Question 5: A population health analyst calculates an age-adjusted rate. What is the primary purpose of age adjustment?
- To allow valid comparison of rates across populations with different age distributions (Correct answer)
- To exclude pediatric patients from the analysis
- To weight outcomes by insurance type
- To standardize clinical quality measures to HEDIS benchmarks
Correct answer: To allow valid comparison of rates across populations with different age distributions
Age adjustment removes the confounding effect of differing age structures, enabling fair comparisons between populations.
Question 6: Which model is commonly used to predict 30-day hospital readmission risk?
- LACE Index (Correct answer)
- Charlson Comorbidity Index
- APACHE II Score
- CURB-65
Correct answer: LACE Index
The LACE Index (Length of stay, Acuity, Comorbidities, ED visits) is a validated tool specifically designed to predict 30-day readmission risk.
Question 7: In population health surveillance, what is the role of a sentinel surveillance system?
- Monitoring a select group of sites to detect disease trends before widespread spread (Correct answer)
- Tracking every case in a defined population
- Collecting death certificate data statewide
- Auditing hospital infection control compliance
Correct answer: Monitoring a select group of sites to detect disease trends before widespread spread
Sentinel surveillance uses selected reporting sites to provide early signals of disease trends with less resource intensity than universal surveillance.
HAC Population Health Analytics 2
Which metric best measures the burden of premature mortality in a population?