Research Article
Injury-Related Deaths according to Environmental, Demographic, and Lifestyle Factors
Table 1
Selected county-specific environmental, demographic, and lifestyle variables in the contiguous United States.
| | | Number | Mean | SD | Median | Minimum | Maximum |
| | Environmental | | Average daily sunlight (kJ/m2) | 3111 | 16400.0 | 1605.0 | 16106.0 | 12689.0 | 21191.0 | | Altitude (m) | 3108 | 424.8 | 494.4 | 269.0 | −17.0 | 3590.0 | | Average daily maximum air temperature (F) | 3111 | 65.4 | 9.3 | 64.8 | 38.4 | 87.5 | | Average fine particulate matter (μg/m3) | 3111 | 11.7 | 1.4 | 11.9 | 7.9 | 14.3 | | Average daily precipitation (mm) | 3111 | 2.7 | 0.9 | 3.0 | 0.2 | 7.1 |
| | Demographic/lifestyle | | % in poverty, 2013 | 3109 | 17.3 | 6.6 | 16.4 | 3.0 | 55.1 | | % adult smokers | 3108 | 26.0 | 3.8 | 26.1 | 9.3 | 40.3 | | % urban, 2010 census | 3109 | 43.3 | 31.9 | 42.7 | 0.0 | 100.0 | | Population density per square mile of land area, 2010 | 3109 | 261.5 | 1733.2 | 46.0 | 0 | 69468.0 | | % obese, age-adjusted, 2013 | 3142 | 30.8 | 4.6 | 31.0 | 11.8 | 47.9 | | % leisure-time physical inactivity, age-adjusted, 2013 | 3142 | 24.7 | 5.0 | 24.5 | 8.4 | 39.8 |
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