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. 2021 Nov 24;16(11):e0258824. doi: 10.1371/journal.pone.0258824

Table 2. Description of socio-environmental variables.

Variable Name Description Periodicity
Urbanization level Large metro or medium/small metro per county. Annually
Unemployment Rate Percent of unemployed workers in the total labor force. Monthly
Poverty Percent of people (of all ages) in poverty in the county. Annually
Income Median household income in the county. Annually
Age Group 1 Percent of county’s population ages below 14. Annually
Age Group 2 Percent of county’s population between ages 15–29. Annually
Age Group 3 Percent of county’s population between ages 30–44. Annually
Age Group 4 Percent of county’s population between ages 45–59. Annually
Age Group 5 Percent of county’s population between ages 60–74. Annually
Age Group 6 Percent of county’s population ages above 75. Annually
Female Percent of county’s population female. Annually
NA Percent of county’s population which is Native Hawaiian, Pacific Islander alone (i.e., no other race). Annually
AA Percent of county’s population which is Asian alone. Annually
IA Percent of county’s population which is American Indian, Alaska native alone. Annually
BA Percent of county’s population which is Black alone. Annually
WA Percent of county’s population which is White alone. Annually
NH Percent of county’s population which is non-Hispanic. Annually
Education Group 1 Percent of county’s population whose education level is less than a High School diploma. Annually
Education Group 2 Percent of county’s population whose education level is a High School diploma only. Annually
Education Group 3 Percent of county’s population whose education level is some college of Associates degree. Annually
Education Group 4 Percent of county’s population whose education level is a Bachelor’s degree or higher. Annually
DP10 Number of days with ≥ 1.00 inch of precipitation in the month. Monthly
DT00 Number of days with minimum temperature ≤ 0 degrees Fahrenheit. Monthly
DX32 Number of days with maximum temperature ≤ 32 degrees Fahrenheit. Monthly
DX70 Number of days with maximum temperature ≥ 70 degrees Fahrenheit. Monthly
DX90 Number of days with maximum temperature ≥ 90 degrees Fahrenheit. Monthly
EMXP Extreme maximum daily precipitation total within month. Values are given in inches (to hundredths). Monthly
CDSD Cooling degree days (season-to-date). Running total of monthly cooling degree days through the end of the most recent month. Each month is summed to produce a season-to-date total. Season starts in July in Northern Hemisphere and January in Southern Hemisphere. Monthly
HDSD Heating degree days (season-to-date). Running total of monthly heating degree days through the end of the most recent month. Each month is summed to produce a season-to-date total. Season starts in July in Northern Hemisphere and January in Southern Hemisphere. Monthly