CPHIMS Ultimate CPHIMS 4 — Questions and Answers
Question 1: Which statistical measure is BEST used to evaluate the performance of a diagnostic algorithm's ability to correctly identify true positives among all actual positive cases?
- Sensitivity (Recall) (Correct answer)
- Specificity
- Positive Predictive Value
- F1 Score
Correct answer: Sensitivity (Recall)
Sensitivity measures the proportion of actual positives correctly identified by the test, calculated as TP / (TP + FN).
Question 2: A health system is designing its disaster recovery plan. The Recovery Point Objective (RPO) defines which of the following?
- The maximum acceptable data loss measured in time (Correct answer)
- The maximum acceptable system downtime after a disaster
- The time needed to restore systems to full capacity
- The priority order for restoring critical applications
Correct answer: The maximum acceptable data loss measured in time
RPO defines the maximum tolerable period in which data might be lost, determining how frequently backups must occur.
Question 3: A hospital is transitioning from ICD-9-CM to ICD-10-CM for diagnosis coding. Which characteristic of ICD-10-CM represents its MOST significant structural difference?
- Alphanumeric codes with up to 7 characters providing greater specificity (Correct answer)
- Purely numeric 5-digit codes
- Integration with SNOMED CT for clinical documentation
- Mandatory use of external cause codes for all diagnoses
Correct answer: Alphanumeric codes with up to 7 characters providing greater specificity
ICD-10-CM uses alphanumeric codes up to 7 characters, allowing far greater clinical specificity than ICD-9's numeric 5-digit codes.
Question 4: In health informatics, which type of study design provides the HIGHEST level of evidence for evaluating the effectiveness of a health IT intervention?
- Randomized Controlled Trial (RCT) (Correct answer)
- Cohort study
- Case-control study
- Cross-sectional survey
Correct answer: Randomized Controlled Trial (RCT)
RCTs provide the strongest evidence by randomly assigning participants to intervention and control groups, minimizing bias.
Question 5: A CMIO is implementing a sepsis early warning algorithm in the EHR. Which ethical concern is MOST critical when deploying predictive algorithms in clinical care?
- Algorithmic bias leading to disparate outcomes across patient populations (Correct answer)
- Vendor contract terms for the algorithm's intellectual property
- Increased alert fatigue from all notification systems
- Hardware costs for running machine learning models
Correct answer: Algorithmic bias leading to disparate outcomes across patient populations
Algorithmic bias can cause predictive models to perform differently across racial, socioeconomic, or demographic groups, leading to health disparities.
Question 6: Which network topology connects all devices to a central hub or switch, making it the MOST common architecture in modern healthcare enterprise networks?
- Star topology (Correct answer)
- Bus topology
- Ring topology
- Mesh topology
Correct answer: Star topology
Star topology connects all devices to a central switch, providing easy fault isolation, simple management, and high reliability for enterprise networks.
Question 7: When evaluating an EHR vendor using a Request for Proposal (RFP), which element should carry the MOST weight in the functional requirements section?
- Alignment of system capabilities with the organization's clinical workflow needs (Correct answer)
- Vendor market share and number of installed customers
- Lowest total cost of ownership
- Speed of implementation timeline
Correct answer: Alignment of system capabilities with the organization's clinical workflow needs
Functional alignment with clinical workflows is paramount because a system that disrupts care delivery undermines adoption and patient safety regardless of other attributes.
CPHIMS Ultimate CPHIMS 4
Which statistical measure is BEST used to evaluate the performance of a diagnostic algorithm's ability to correctly identify true positives among all actual positive cases?