HAC Healthcare Analytics Predictive Analytics & Trends 3

Question 1

Which approach allows multiple hospitals to collaboratively train a predictive model without sharing raw patient data, preserving privacy?

Accepted Answer

Federated learning

Answer

Federated learning trains models across decentralized data sources by sharing model updates rather than raw data, protecting patient privacy.

Question 2

A hospital's sepsis prediction algorithm flags 80% of actual sepsis cases but also generates many false alarms. Which metric directly measures the proportion of flagged cases that are true sepsis?

Accepted Answer

Precision

Answer

Precision measures the proportion of positive predictions that are actually correct, directly reflecting the false alarm rate.

Question 3

Predictive models in healthcare increasingly incorporate social determinants of health (SDOH). Which of the following is an example of an SDOH variable?

Accepted Answer

Housing instability

Answer

Housing instability is a social determinant of health, reflecting non-clinical factors that influence health outcomes and are increasingly used in predictive models.

Question 4

When building a 30-day mortality prediction model, including the discharge disposition variable (e.g., 'discharged to hospice') causes near-perfect accuracy. This is best described as:

Accepted Answer

Label leakage

Answer

Label leakage occurs when features that are direct consequences of the outcome are included in training data, artificially inflating model performance.

Question 5

Which statistical method is commonly used to handle missing data in healthcare predictive models by estimating plausible values based on observed data?

Accepted Answer

Multiple imputation

Answer

Multiple imputation fills missing values by creating several plausible datasets based on observed data distributions, reducing bias from complete-case analysis.

(HAC) Healthcare Analytics Certification Practice Test

(HAC) Healthcare Analytics Certification Practice Test

HAC Healthcare Analytics Predictive Analytics & Trends 3