EHR Data Analytics & Population Health 2

Question 1

Which statistical measure is most appropriate for describing the central tendency of skewed clinical data distributions?

Accepted Answer

Median

Answer

The median is preferred over the mean for skewed distributions because it is not influenced by extreme outliers.

Question 2

A population health analyst identifies that readmission rates differ significantly by ZIP code. This disparity most likely reflects which type of determinant?

Accepted Answer

Social determinants of health

Answer

ZIP code-level disparities in readmissions commonly reflect social determinants such as income, transportation, and access to follow-up care.

Question 3

What is the primary purpose of a risk stratification model in population health management?

Accepted Answer

Identify high-risk patients for proactive intervention

Answer

Risk stratification models score patients by predicted future utilization or deterioration so care teams can intervene before costly events occur.

Question 4

In an EHR data warehouse, a 'fact table' typically stores which type of information?

Accepted Answer

Transactional measurable events such as encounters

Answer

In a star schema, fact tables contain quantitative, transactional data like encounter counts, charges, and lab results keyed to dimension tables.

Question 5

Which metric calculates the proportion of a population that has a disease at a specific point in time?

Accepted Answer

Prevalence rate

Answer

Prevalence measures existing cases divided by population size at a specific time, capturing the burden of a disease in a community.

(EHR) Electronic Health Records Program Certification Practice Test

(EHR) Electronic Health Records Program Certification Practice Test

EHR Data Analytics & Population Health 2