In a cohort of 3000 employees working fulltime as cashiers a

In a cohort of 3,000 employees working full-time as cashiers at the Piggly Wiggly, there were 760 ergonomic injuries to wrists during a 2-year time period. Among 5,000 people who are not employees of the Piggly Wiggly, there were 210 wrist injuries during the same time period. Calculate the relative risk of ergonomic injuries for cashiers compared to non-cashiers. Present to 1 decimal point.

The case-fatality rate is the percentage of persons diagnosed as having a specified disease who die as a result of that illness within a given period. Which country has the largest annual number of cerebrovascular disease DEATHS among new cases?

Country

Incidence Rate (per 10,000), 2010

Population, 2010

1-Year Case Fatality Rate (%)

A

10

50,000

50%

B

8

100,000

25%

C

4

250,000

20%

D

4

250,000

10%

Solution

First step is we draw a 2x2 table.

Obviously proportion for people working in Piggly Wiggly is more for wrist injuries than non Piggly wiggly

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Country

Incidence Rate (per 10,000), 2010

Population, 2010

1-Year Case Fatality Rate (%)

Deaths

col III * col V

A

10

50,000

50%

B

8

100,000

25%

C

4

250,000

20%

D

4

250,000

10%

Country A has the highest number of death of 25 for cerbrovascular diseases.