Scenario #4 (8 points)

The following table lists the age-specific number of deaths and populations for two communities, A and B.

Table 1

POPULATION A

POPULATION B

AGE

DEATHS

POPULATION

RATE/

1000

DEATHS

POPULATION

RATE/

1000

0-4

150

30,000

250

130,000

5-19

100

100,000

250

250,000

20-44

350

120,000

700

200,000

45-64

400

40,000

2,100

140,000

65+

500

10,000

2,500

50,000

TOTAL

1,500

300,000

5,800

770,000

Table 2

United States Census Population (2000)

AGE

POPULATION

(U S STANDARD)

EXPECTED # DEATHS

POPULATION A

EXPECTED # DEATHS

POPULATION B

0-4

11,000

5-19

27,000

20-44

33,000

45-64

20,000

65+

9,000

TOTAL

100,000

  1. Complete Table 1 with the age specific and total mortality rates for each population. (2 pts. Show work for full credit. You may just show the work or formula used for one cell of the table and then complete the rest of the table.)

  2. Complete Table 2 by calculating the expected number of deaths for Populations A and B using the age-specific U S population as the standard population. (2 pts. Show work for full credit. . You may just show the work or formula used for one cell of the table and then complete the rest of the table.)

  3. What are the age-standardized (adjusted) mortality rates for populations A and B? (1 pt)

  4. What method of rate standardization/adjustment did you use to calculate these adjusted rates? (1 pt.)

  5. Looking at the crude mortality rates, you would have concluded that population B had higher mortality. Did your conclusion change after looking at the age adjusted rates? Explain why the age adjusted rates differ from the crude rates. (2 pts.)

Scenario #5 (6 points)

The following two tables presents data on mortality in two factories, A and B.

DATA ON FACTORY A:

AGE

POPULATION

IN FACTORY A

STANDARD

MORTALITY

RATE/1000

EXPECTED #

OF DEATHS

OBSERVED #

OF DEATHS

20-39

4,000

5

40-49

5,000

10

50-59

7,000

15

TOTAL

16,000

200

DATA ON FACTORY B:

AGE

POPULATION

IN FACTORY B

STANDARD

MORTALITY

RATE/1000

EXPECTED #

OF DEATHS

OBSERVED #

OF DEATHS

20-39

7,000

5

40-49

5,000

10

50-59

4,000

15

TOTAL

16,000

320

  1. Calculate the expected number of deaths for each factory, A and B. Place your answers in the tables above. (2 pts. Show work for full credit. You may just show the work or formula used for one cell of the table and then complete the rest of the table.)

  2. Calculate the Standardized Mortality Ratio (SMR) for each factory, A and B. (2 pts. Show work for full credit.)

  3. What method of rate adjustment or standardization did you use to calculate the SMRs? (1 pt.)

  4. Based on the SMRs, which factory has a worse mortality experience? How much higher is the mortality than the general population? (1 pt.)

 

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