Injury-Related Deaths according to Environmental, Demographic, and Lifestyle Factors
Table 5
Relative mortality rates of death from suicide and self-inflicted injury according to selected environmental, demographic, and lifestyle variables in the contiguous United States, 2011–15.
Quartile groupings
Adjusted for age, sex, and race
Adjusted for age, sex, race, and the other variables with results listed
Relative rate
95% LCL
95% UCL
Pr > ChiSq
Relative rate
95% LCL
95% UCL
Pr > ChiSq
Average daily sunlight (kJ/m2)
<15050
1.00
15050–16105
0.96
0.94
0.97
<0.0001
16106–17720
1.12
1.11
1.14
<0.0001
≥17721
1.04
1.03
1.05
<0.0001
Altitude (m)
<268
1.00
1.00
269–476
1.08
1.07
1.10
<0.0001
1.09
1.07
1.11
<0.0001
477–1040
0.99
0.97
1.01
0.1779
1.07
1.05
1.10
<0.0001
≥1041
1.52
1.50
1.55
<0.0001
1.65
1.61
1.69
<0.0001
Average maximum daily temperature (F)
<58.1
1.00
58.1–64.7
0.89
0.88
0.91
<0.0001
0.94
0.92
0.95
<0.0001
64.8–73.0
0.97
0.96
0.99
0.0008
1.08
1.07
1.10
<0.0001
≥73.1
1.07
1.06
1.09
<0.0001
1.19
1.17
1.21
<0.0001
Average fine particulate matter (µg/m3)
<10.5
1.00
10.5–11.8
0.91
0.90
0.92
<0.0001
11.9–12.8
1.10
1.08
1.11
<0.0001
≥12.9
1.04
1.02
1.05
<0.0001
Average daily precipitation (mm)
<2.08
1.00
1.00
2.08–2.97
1.02
1.01
1.04
0.0023
1.08
1.06
1.10
<0.0001
2.98–3.37
0.99
0.98
1.01
0.3097
1.09
1.07
1.12
<0.0001
≥3.38
1.00
0.99
1.01
0.9954
1.12
1.10
1.14
<0.0001
% in poverty, 2013
3.0–12.5
1.00
1.00
12.6–16.3
1.18
1.17
1.20
<0.0001
1.01
0.99
1.02
0.4304
16.4–20.8
1.10
1.09
1.12
<0.0001
0.92
0.91
0.94
<0.0001
20.9–55.1
1.11
1.09
1.14
<0.0001
0.88
0.86
0.90
<0.0001
% adult smokers
9.3–23.6
1.00
1.00
23.6–26.1
1.24
1.22
1.26
<0.0001
1.19
1.17
1.21
<0.0001
26.2–28.5
1.41
1.39
1.43
<0.0001
1.27
1.25
1.30
<0.0001
28.6–40.3
1.57
1.55
1.60
<0.0001
1.44
1.41
1.47
<0.0001
% urban, 2010 census
0–17.3
1.00
17.3–43.7
1.17
1.12
1.23
<0.0001
43.8–69.1
1.01
0.97
1.06
0.5328
69.2–100
0.75
0.72
0.78
<0.0001
Population density per square mile of land area, 2010
