Share
Explore BrainMass

Explore BrainMass

Epidemiology: Mortality Rates

The National Highway Traffic Safety Administration reported that 4,739 deaths occurred in the U.S. during 2000 when a pedestrian was struck and killed by a motor vehicle. They estimate that 78,000 pedestrians were injured in pedestrian/motor-vehicle collisions during the year. The population of the United States that year was 281,421,906.

Show all steps in your calculations below.

1) Based on these data, what was the case fatality rate of pedestrian/motor-vehicle collision injury in 2000? Express this as a percentage.

2) What was the cause specific mortality rate for pedestrian/vehicle collisions that year? Express this per 100,000.

3) If there were a total of 2,448,117 deaths from all causes that year in the United States, what would the proportionate mortality for pedestrian motor-vehicle collisions be? Express this as a percentage.

Solution This solution is FREE courtesy of BrainMass!

1) Based on these data, what was the case fatality rate of pedestrian/motor-vehicle collision injury in 2000? Express this as a percentage.

The case fatality rate is the rate of death among people who already have a condition (here, the condition is being hit by a car).

case fatality rate = (number of people with the condition who die / number of people with that condition) x 100
case fatality rate = (4739 / 78000) x 100 = 0.060756 x 100 = 6.0756%

2) What was the cause specific mortality rate for pedestrian/vehicle collisions that year? Express this per 100,000.

mortality rate for motor vehicle collisions = (4739 / 281,421,906) x 100,000 = 0.0000168 x 100,000 = 1.6839

3) If there were a total of 2,448,117 deaths from all causes that year in the United States, what would the proportionate mortality for pedestrian motor-vehicle collisions be? Express this as a percentage.

proportionate mortality rate for motor vehicle collisions = (4739 / 2,448,117) x 100 = 0.00193577 = 0.193577%