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Only RCTs are included.
Recent:Solberg.
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Summary.
Jul 24 2024 |
et al., BMJ, doi:10.1136/bmj-2023-078918 | Personal protective effect of wearing surgical face masks in public spaces on self-reported respiratory symptoms in adults: pragmatic randomised superiority trial |
| 7% more cases (p=0.82). RCT 4,575 adults in Norway showing no significant difference in reported COVID-19 cases with surgical face mask use in public spaces. The study reports lower risk of overall respiratory infections, however this may be due to reporting bia.. | ||
Jul 17 2024 |
et al., BMC Public Health, doi:10.1186/s12889-024-19462-1 | A prospective randomised controlled trial investigating household SARS-CoV-2 transmission in a densely populated community in Cape Town, South Africa – the transmission of COVID-19 in crowded environments (TRACE) study |
| 98% more cases (p=0.06) and 164% worse results (p=0.08). Cluster RCT 81 index cases and 245 household contacts in South Africa, showing no significant difference in COVID-19 cases with PPE use. The only symptom information is reported for index cases in the registry under adverse events. Public.. | ||
Jan 30 2023 |
et al., Cochrane Database of Systematic Reviews, doi:10.1002/14651858.CD006207.pub6 | Physical interventions to interrupt or reduce the spread of respiratory viruses |
| Systematic review and meta-analysis of 78 RCTs for mask use and hand hygiene. Community mask wearing made little or no difference to the outcome of influenza-like illness/COVID-19 like illness (RR 0.95 [0.84-1.09]; 9 trials, 276,917 parti.. | ||
Jan 14 2022 |
et al., Science, doi:10.1126/science.abi9069 | Impact of community masking on COVID-19: A cluster-randomized trial in Bangladesh |
| 9% fewer symptomatic cases (p=0.05). RCT 342,183 adults in Bangladesh showing lower COVID-19 cases with a community-level mask promotion and distribution intervention. The reduction in symptoms and seroprevalence was larger with surgical masks compared to cloth masks, and in.. | ||
Nov 18 2020 |
et al., Annals of Internal Medicine, doi:10.7326/M20-6817 | Effectiveness of Adding a Mask Recommendation to Other Public Health Measures to Prevent SARS-CoV-2 Infection in Danish Mask Wearers |
| 18% fewer cases (p=0.33). RCT 4,862 community-dwelling adults in Denmark, showig no significant difference in COVID-19 cases with recommending the use of surgical masks outside the home. The prespecified mortality outcomes are not reported and the only severity in.. | ||
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