Table 1.
All masks | ME | LR | ||||
% | 95% CI | % | 95% CI | % | 95% CI | |
Fitness after use | 84 | 77 to 90 | 85 | 73 to 93 | 83 | 73 to 90 |
Fitness after dry heat: fit test done prior to heat | 86 | 78 to 91 | 93 | 80 to 98 | 82 | 70 to 89 |
Fitness after dry heat: no fit test done prior to heat | 72 | 64 to 79 | 79 | 66 to 88 | 68 | 57 to 77 |
LR, limited reuse; ME, modified extended use.