Table 1 Judged number of exposed persons that are infected and values predicted by the VEM model with the exponent = − 2.00. The instruction specified that at the comparison distance 0.5 m without a mask, 100 out of 1000 persons were infected.
From: Airborne SARS-CoV2 virus exposure, interpersonal distance, face mask and perceived risk of infection
Median 25th–75th percentiles | Mode | N | Linear proportional prediction | VEM predictions | Median—VEM | |
|---|---|---|---|---|---|---|
Condition no mask | ||||||
Reference value Dist = 0.5 m | 100.00 | – | 100.00 | 100.00 | ||
Dist = 1.0 m | 50.00 (50.00–62.75) | 50.00 | 165 | 50.00 | 25.00 | 25.00*** |
Dist = 1.5 m | 30.00 (25.00–50.00) | 25.00 | 168 | 33.00 | 11.11 | 17.65*** |
Dist = 2.0 m | 13.30 (10.00–25.00) | 25.00 | 172 | 25.00 | 6.25 | 7.05*** |
Condition commercial mask | ||||||
Reference value Dist = 0.5 m | 40.00 | – | 40.00 | 40.00 | ||
0.5 m | 40.00 (40.00–61.30) | 40.00 | 162 | 40.00 | 40.00 | 0.00 |
1.0 m | 25.00 (20.00–40.00) | 20.00 | 165 | 20.00 | 10.00 | 15.00*** |
1.5 m | 15.00 (8.75–27.50) | 10.00 | 169 | 13.00 | 4.44 | 10.56*** |
Condition FFP2 mask | ||||||
Reference value Dist = 0.5 m | 5.00 | – | 5.00 | 5.00 | ||
0.5 m | 5.00 (5.00–20.00) | 5.00 | 170 | 5.00 | 5.00 | 0.00 |
1.0 m | 3.50 (2.00–10.00) | 2.00 | 170 | 2.50 | 1.25 | 2.25*** |
1.5 m | 2.00 (1.00–5.00) | 1.00 | 172 | 0.80 | 0.56 | 1.45*** |
