The cause-specific mortality rate from roller-skating was:

Understand the Problem

The question is asking for the calculation of the cause-specific mortality rate related to roller-skating in Metroville, using provided data regarding injuries and deaths. It is essentially looking for the formula that correctly applies the data to calculate that specific rate.

Answer

The cause-specific mortality rate from roller-skating is $5,000$ deaths per 100,000 individuals.

Steps to Solve

Identify the formula for cause-specific mortality rate

The cause-specific mortality rate can be calculated using the formula: $$ \text{Cause-Specific Mortality Rate} = \left( \frac{\text{Total Deaths from the Cause}}{\text{Total Number Injured from the Cause}} \right) \times 100,000 $$

Plug in the values from the data

From the question, we have:

Total deaths from roller-skating: 90
Total number of residents injured from roller-skating: 1,800

We substitute these values into the formula.

Calculate the cause-specific mortality rate

Using the values in the formula: $$ \text{Cause-Specific Mortality Rate} = \left( \frac{90}{1,800} \right) \times 100,000 $$

Perform the calculation

First calculate the fraction: $$ \frac{90}{1,800} = 0.05 $$

Then multiply by 100,000: $$ 0.05 \times 100,000 = 5,000 $$

The cause-specific mortality rate from roller-skating is $5,000$ deaths per 100,000 individuals.

More Information

The cause-specific mortality rate helps identify the risk associated with a specific cause of death in relation to the population exposed to that risk. Here, roller-skating injuries resulted in a mortality rate of 5,000 per 100,000 skaters, illuminating safety concerns in the activity.

Tips

Confusing the denominator: Using the total population instead of the specific population affected by the activity can lead to incorrect calculations. Always ensure the denominator represents the appropriate group affected by the cause.

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