CPHA CPHA Health Informatics & Data Analytics 2

Question 1

Which type of public health data system links records across multiple databases using unique identifiers to follow individuals over time?

Accepted Answer

Longitudinal Linked Data System

Answer

Longitudinal linked data systems connect records from disparate sources (e.g., birth records, Medicaid claims, hospital discharge data) using common identifiers to track health outcomes over time.

Question 2

The Behavioral Risk Factor Surveillance System (BRFSS) collects health data primarily through which method?

Accepted Answer

Telephone interviews

Answer

BRFSS is the world's largest telephone survey system, collecting state-level data on health risk behaviors and preventive health practices among US adults.

Question 3

Which concept in informatics describes ensuring that data values accurately represent real-world conditions and are free from errors?

Accepted Answer

Data Validity

Answer

Data validity refers to the degree to which data values accurately represent the true real-world state they are intended to measure.

Question 4

A health department uses geographic information systems (GIS) to map disease incidence rates by zip code. Which type of analysis is this?

Accepted Answer

Spatial Epidemiology

Answer

Spatial epidemiology studies the geographic distribution of disease to identify spatial patterns, clusters, and environmental or social determinants of health.

Question 5

Which term describes a situation where a statistical association between two variables exists only because both are related to a third variable not included in the analysis?

Accepted Answer

Confounding

Answer

Confounding occurs when a third variable is associated with both the exposure and outcome, creating a spurious or distorted association between them.

CPHA - Certified Public Health Administrator Practice Test

CPHA - Certified Public Health Administrator Practice Test

CPHA CPHA Health Informatics & Data Analytics 2