Table 1.
Descriptive statistics from the sample of 435 survey respondents showing frequencies and percentages in different categories of risk factors associated with COVID-19 infection in Vermont between April 20 and May 13, 2020.
| Respondent characteristic | COVID-19–negative subjects (n=425), mean or proportion (SD)a | COVID-19–positive subjects (n=10), mean or proportion (SD)a | T statistic | P value |
| Number of contacts with children | 1.5 (0.3635) | 1.0 (0.4629) | 0.1754 | .86 |
| Number of contacts with adults | 5.0 (0.6383) | 31.6 (20.1112) | –5.0571 | <.001 |
| Number of contacts with older adults | 2.9 (0.6565) | 14.8 (7.4276) | –2.4882 | .01 |
| Number of contacts with people who tested positive for COVID-19 | 0.1 (0.4247) | 0.9 (1.3562) | –1.8110 | .07 |
| Age (years) | 51.4 (0.6366) | 51.9 (3.6028) | –0.1075 | .91 |
| Sex (female=1) | 0.6 (0.0241) | 0.6 (0.1830) | –0.2230 | .82 |
| High income (1=yes) | 0.6 (0.0243) | 0.4 (0.1830) | 0.9561 | .34 |
| Any symptoms (1=yes) | 0.2 (0.0180) | 0.5 (0.1890) | –2.6804 | .007 |
| Diabetes (1=yes) | 0.04 (0.0100) | 0.13 (0.1250) | –1.1380 | .26 |
| Exposure at work, Occupational Information Network score (1-100) | 26.2 (1.8328) | 19.0 (12.0208) | 0.5159 | .61 |
| Urban (versus suburban/rural; 1=yes) | 0.3 (0.0218) | 0.3 (0.1637) | 0.1638 | .87 |
| Live in condominium/apartment (versus house; 1=yes) | 0.2 (0.01923) | 0.3 (0.1637) | –0.4041 | .69 |
| Wearing mask outside work (1=yes) | 0.7 (0.230) | 0.5 (0.1890) | 1.1382 | .26 |
aBased on a t test, Ha: diff!=0.