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. 2021 Jan 11;7(1):e24320. doi: 10.2196/24320

Table 2.

Predicted probabilities of COVID-19 infection in Vermont between April 20 and May 13, 2020.

Respondent characteristic Model 1: probability of COVID-19 infection: children contact modela P value Model 2: probability of COVID-19 infection: adult contact modela P value Model 3: probability of COVID-19 infection: older adult contact modela P value
Number of contacts with children (those aged 0-17 years) –0.0104 (0.0403) .88 N/Ab N/A N/A N/A
Number of contacts with Adults (those aged 18-64 years) N/A N/A 0.0118 (0.0059) .03 N/A N/A
Number of contacts with older adults (those aged ≥65 years) N/A N/A N/A N/A 0.0122 (0.0063) .05
Number of contacts with people who tested positive for COVID-19 0.5359 (0.2111) .04 0.4406 (0.2243) .16 0.5356 (0.2123) .42
Aged ≥45 years 0.2038 (0.3701) .36 0.2432 (0.3854) .27 0.2484 (0.3846) .29
Female –0.0766 (0.3404) .77 0.0501 (0.3632) .53 –0.0025 (0.3567) .65
High income –0.3967 (0.3402) .15 –0.3377 (0.3480) .18 –0.4023 (0.3484) .14
Any symptoms 0.3969 (0.3579) .08 0.4159 (0.3703) .07 0.4052 (0.3661) .07
Diabetes 0.1394 (0.6342) .96 –0.4759 (0.9156) .46 –0.1672 (0.7184) .68
Observations 413 N/A 413 N/A 413 N/A

aProbit regression marginal effects with standard errors in parentheses. Pseudo R2: 0.42.

bN/A: not applicable.