| Low attack rate scenario | High attack rate scenario | ||||
---|---|---|---|---|---|---|
Outcome | Medical mask attack rate | Power (RR = 0.75) | Detectable RR (80 % Power) | Medical mask attack rate | Power (RR = 0.75) | Detectable RR (80 % Power) |
Primary | 0.2 | 43Â % | 0.62 | 0.5 | 93Â % | 0.80 |
Influenza like illness | 0.15 | 33Â % | 0.56 | 0.4 | 82Â % | 0.76 |
Acute respiratory illness | 0.5 | 93Â % | 0.80 | 0.95 | 100Â % | 0.94 |
Laboratory confirmed respiratory illness | 0.3 | 91Â % | 0.79 | 0.7 | 100Â % | 0.90 |