Question

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 1,800 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?

Answer 1

Answer:

90/900 × 100,000.

Explanation:

Mortality ratio may be defined as the ratio used to define the number of deaths in the cohort or group.

The mortality ratio can be calculated by the following formula:

Mortality ratio = Number of death from specific reason/ total number of death × total number of individual.

The mortality ratio due to roller skating = $\frac{90}{900}\times100,000$

Thus, the answer is 90/900 × 100,000.