An air quality monitor is situated in the neighborhoods near McDonald Steel in McDonald, OH and measures levels of PM10 and NO2. These levels would be what kind of variable?

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BlackTom AI · Accepted Answer

The prompt presents a scenario where an air quality monitor near a steel facility records PM10 and NO2 levels. We need to categorize the type of variable these measurements represent.
Option 1: Health related outcome. This would refer to variables that measure health effects or status (e.g., incidence of asthma, hospital visits, lung function). PM10 and NO2 are environmental measurements, not direct health outcomes, so this option misclassifies the variable type.
Option 2: Demographic/social. Demographic or social variables describe characteristics of a population such as age, income, race, or education level. The PM10 and NO2 readings do not describe people or social attributes, so this choice is incorrect.
Option 3: Community infrastructure. This category covers physical systems and structures like roads, water systems, housing, or power grids. While air quality can relate to environmental conditions affecting infrastructure, the pollutant measurements themselves are not an infrastructure variable, making this option inappropriate for the classification at hand.
Option 4: Environmental. This label is used for measurements of natural or environmental processes and conditions, such as air pollutants, temperature, humidity, or soil composition. PM10 and NO2 fall squarely into environmental variables because they quantify environmental exposure levels in the ambient air.

PUBHEPI 2410 AU2025 (1751) Quiz Module 2: Practical applications of epidemiology

An air quality monitor is situated in the neighborhoods near McDonald Steel in McDonald, OH and measures levels of PM10 and NO2. These levels would be what kind of variable?

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