Table 2.
C t increase ( ± SD) | Percentage blocked (95% CI) | |
---|---|---|
N95 mask | 12.49 ± 0.33 | 99.98% (99.98%‐99.99%) |
Medical mask | 5.13 ± 0.98 | 97.14% (94.36%‐98.55%) |
Homemade mask | 4.37 ± 0.90 | 95.15% (90.97%‐97.39%) |
Abbreviations: AIV, avian influenza virus; CI, confidence interval; SD, standard deviation.