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Solution:
• Homicide-related death rate (males)
= (Number of homicide deaths among males/male population) × 100,000
= 15,555/139,813,000 × 100,000
= 11.1 homicide deaths per 100,000 population among males
• Homicide-related death rate (females)
= (Number of homicide deaths among females/female population) × 100,000
= 4,753/144,984,000 × 100,000
= 3.3 homicide deaths per 100,000 population among females
8.4.1.12 Age-Adjusted Mortality Rates
Mortality rates can be used to compare the rates in one area with the rates in another area, or to
compare rates over time. However, because mortality rates obviously increase with age, a higher
mortality rate among one population than among another might simply reflect the fact that the first
population is older than the second. Consider that the mortality rates in 2002 for the states of Alaska
and Florida were 472.2 and 1005.7 per 100,000, respectively (see Table 8.6). Should everyone from
Florida move to Alaska to reduce their risk of death? No, the reason that Alaska's mortality rate is
so much lower than Florida's is that Alaska's population is considerably younger. Indeed, for seven
age groups, the age-specific mortality rates in Alaska are actually higher than Florida's.
TABLE 8.6
All-Cause Mortality by Age Group—Alaska and Florida, 2002
Alaska
Florida
Age Group
(years)
Death Rate
(per 100,000)
Death Rate
(per 100,000)
Population
Deaths
Population
Deaths
<1
9938
55
553.4
205,579
1548
753.0
1-4
38,503
12
31.2
816,570
296
36.2
5-9
50,400
6
11.9
1,046,504
141
13.5
10-14
57,216
24
41.9
1,131,068
219
19.4
15-19
56,634
43
75.9
1,073,470
734
68.4
20-24
42,929
63
146.8
1,020,856
1146
112.3
25-34
84,112
120
142.7
2,090,312
2627
125.7
35-44
107,305
280
260.9
2,516,004
5993
238.2
45-54
103,039
427
414.4
2,225,957
10,730
482.0
55-64
52,543
480
913.5
1,694,574
16,137
952.3
65-74
24,096
502
2083.3
1,450,843
28,959
1996.0
65-84
11,784
645
5473.5
1,056,275
50,755
4805.1
85+
3117
373
11,966.0
359,056
48,486
13,503.7
Unknown
NA
0
NA
NA
43
NA
Total
3000
3030
472.2
16,687,068
167,814
1005.7
Age-adjusted rate
794.1
787.8
Source:
Web-based Injury Statistics Query and Reporting System (WISQARS), http://www.cdc.gov/injury/
wisqars.
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