Minimising the duration of N95 respirator use during hospital SARS-CoV-2 outbreaks: A mixed-effects analysis of post-screening infection reduction.

Admission restriction periods showed a trend toward shorter duration in the N95 respirator group (mean 6.2 vs 7.3 days), with notably less variability compared to the surgical mask group (SD 2.2 vs 4.4 days; range 3–10 vs 3–18 days), though this difference was not statistically significant ( P = 0.584).

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