An Epidemiologic Survey of Roller-Skating Injuries in Metroville, a City

question 4

Multiple Choice

An epidemiologic survey of roller-skating injuries in Metroville, a city with a population of 100,000 (during the midpoint of the year) , produced the following data for a particular year:
Number of skaters in Metroville during any given month: 12,000
Roller-skating injuries in Metroville: 600
Total number of residents injured from roller-skating: 1800
Total number of deaths from roller-skating: 90
Total number of deaths from all causes: 900
The proportional mortality ratio (%) due to roller-skating was:

• A) 90/600 × 100.
• B) 90/100,000 × 100.
• C) 90/1800 × 100.
• D) 90/900 × 100.

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Definitions:

Neurotransmitters

Chemicals in the nervous system that transmit signals across a synapse from one neuron to another.

Agonists

Substances that activate receptors to produce a biological response.

Genes

Units of heredity made up of DNA that are responsible for determining the characteristics and traits passed from parents to offspring.

Positively Charged

A positively charged object has more protons than electrons, resulting in a net positive electric charge.