Introductory Biostatistics

(Chris Devlin) #1
TABLE E1.31a
Age Group Deaths Population
0–4 2,483 424,600
5–19 1,818 1,818,000
20–44 3,656 1,126,500
45–64 12,424 870,800
65 þ 21,405 360,800

TABLE E1.31b
Age Group Population
0–4 84,416
5–19 294,353
20–44 316,744
45–64 205,745
65 þ 98,742
Total 1,000,000

U.S. population given in Table 1.8, reproduced here in Table
E1.31b, being used as the standard.
(c)Calculate the age-adjusted death rate for Georgia with the Alaska
population serving as the standard population. How does this ad-
justed death rate compare to the crude death rate of Alaska?

1.32 Refer to the same set of mortality data as in Exercise 1.31. Calculate and
compare the age-adjusted death rates for the states of Alaska and Flor-
ida, with the Georgia population serving as the standard population.
How do mortality in these two states compare to mortality in the state of
Georgia?


1.33 Some 7000 British workers exposed to vinyl chloride monomer were
followed for several years to determine whether their mortality experi-
ence di¤ered from those of the general population. In addition to data
for deaths from cancers as seen in Example 1.20 (Table 1.23), the study
also provided the data shown in Table E1.33 for deaths due to circula-


TABLE E1.33
Years Since Entering the Industry
Deaths 1–4 5–9 10–14 15 þ Total
Observed 7 25 38 110 180
Expected 32.5 35.6 44.9 121.3 234.1

48 DESCRIPTIVE METHODS FOR CATEGORICAL DATA

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