AHIC Data Analytics and Data Management 3 — Questions and Answers
Question 1: A hospital is integrating lab results from multiple EHR systems that use different LOINC codes for the same test. Which interoperability layer does this problem primarily affect?
- Technical interoperability
- Semantic interoperability (Correct answer)
- Organizational interoperability
- Legal interoperability
Correct answer: Semantic interoperability
Semantic interoperability ensures that data shared between systems carries the same meaning, requiring standardized terminologies like LOINC to be consistently applied.
Question 2: Which statistical measure is most resistant to the influence of extreme outlier values in a clinical dataset?
- Mean
- Variance
- Median (Correct answer)
- Standard deviation
Correct answer: Median
The median is the middle value and is not affected by extreme outliers, making it more robust than the mean for skewed clinical distributions.
Question 3: In a clinical decision support system, a rule fires an alert for every fifth patient, regardless of clinical relevance. This is an example of which problem?
- Alert fatigue from low specificity (Correct answer)
- Underfitting of the predictive model
- Data provenance failure
- Reference terminology mismatch
Correct answer: Alert fatigue from low specificity
Alert fatigue occurs when too many low-specificity alerts fire, causing clinicians to ignore or override them, reducing patient safety benefit.
Question 4: Which NoSQL database model stores data as key-value pairs and is best suited for session management and real-time caching in health IT applications?
- Document store
- Graph database
- Column-family store
- Key-value store (Correct answer)
Correct answer: Key-value store
Key-value stores offer O(1) lookup by key and are ideal for high-speed caching and session data where only simple retrieval by identifier is needed.
Question 5: What does the term 'data lineage' refer to in a health data management context?
- The ownership hierarchy of a dataset within an organization
- The audit trail showing where data originated and how it transformed over time (Correct answer)
- The demographic characteristics embedded in a dataset
- The version history of database schema changes
Correct answer: The audit trail showing where data originated and how it transformed over time
Data lineage documents the origin, movement, and transformation of data through systems, enabling traceability and root-cause analysis of data quality issues.
Question 6: A health analytics team uses k-means clustering on patient records without labels. Which type of insight can this analysis NOT directly provide?
- Natural groupings within patient populations
- Identification of high-cost patient subgroups
- Prediction of a specific patient's diagnosis (Correct answer)
- Segmentation for population health interventions
Correct answer: Prediction of a specific patient's diagnosis
K-means is unsupervised and produces clusters but cannot predict a specific labeled outcome like a diagnosis without a supervised model trained on labeled data.
Question 7: Under the HIPAA Security Rule, which safeguard category requires covered entities to implement workforce training and access management procedures?
- Physical safeguards
- Technical safeguards
- Administrative safeguards (Correct answer)
- Organizational safeguards
Correct answer: Administrative safeguards
Administrative safeguards encompass policies and procedures for workforce conduct, training, access authorization, and incident response under the HIPAA Security Rule.
AHIC Data Analytics and Data Management 3
A hospital is integrating lab results from multiple EHR systems that use different LOINC codes for the same test.
Which interoperability layer does this problem primarily affect?