Table 1.
Descriptive Statistics for Variables Used in Statistical Models.
| Variable Name | Mean | SD | Range | Description |
|---|---|---|---|---|
| Dependent variables | ||||
| Vaccine sites | 7.92 | 17.95 | 0 to 169.71 | Number of vaccine sites per 100,000 people in a ZIP code |
| Vaccine doses | 1,199.01 | 8,295.32 | 0 to 238,415.58 | Number of vaccine doses allocated to ZIP code per 10,000 people |
| Independent variables | ||||
| Black clustering | 0 | 648.99 | −700.47 to 4,150.46 | Clustering measure of % Black |
| Latino clustering | 0 | 1,611.93 | −2,986.80 to 5,851.91 | Clustering measure of % Latino |
| Asian clustering | 0 | 84.01 | −73.08 to 812.42 | Clustering measure of % Asian |
| Population density | 3,291.17 | 2,359.18 | 6.83 to 16,811.43 | Population density per square mile |
| Population age 65+ | 10.94 | 4.13 | 0 to 36.60 | % of population age 65 and above |
| % Service work | 17.01 | 6.43 | 0 to 43.40 | % of employed population in service occupations |
| Household income | 68,094.12 | 31,467.35 | 17,798 to 240,417 | Median household income |
| % Bachelor’s degree | 32.96 | 21.30 | 2.60 to 90.00 | % of population over 25 with at least a bachelor’s degree |
| % No vehicle | 6.10 | 5.38 | 0 to 39 | % of households with no private vehicle |
| Infections | 2,127.59 | 1,652.52 | 0 to 9,906 | Number of positive SARS-CoV-2 infections |
| Hospitals | .61 | 1.46 | 0 to 15 | Number of general hospitals |
| Physicians’ offices | 26.84 | 41.99 | 0 to 294 | Number of physicians’ offices |
| Pharmacies | 3.89 | 3.39 | 0 to 18 | Number of pharmacies |
| Retirement communities | 1.41 | 1.88 | 0 to 14 | Number of retirement and assisted living facilities for the elderly |
Note: N = 431. Data come from the Texas Department of State Health Services, the 2014–2018 American Community Survey, and the 2016 County Business Patterns.