Effectiveness of Mask Recommendation to Prevent SARS-CoV-2 (Randomized trial)

Re:Effectiveness of Mask Recommendation to Prevent SARS-CoV-... by petertodd on Wednesday November 18, 2020 @01:11PM (#25140158)

They asked about compliance:

> Based on the lowest adherence reported in the mask group during follow-up, 46% of participants wore the mask as recommended, 47% predominantly as recommended, and 7% not as recommended."

Personally, I find it easy to believe that people were in fact wearing their masks. To be in the study you it looks like you had to joined voluntarily on your own accord, indicating a participant group with an interest in it:

> Recruitment involved media advertisements and contacting private companies and public organizations

If anything, I find it easy to believe that adherence would be less in the general population than in this study. Particularly stuff like wearing masks incorrectly, eg not covering the nose, leaving gaps, etc.

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Re:Effectiveness of Mask Recommendation to Prevent SARS-CoV-... by sterlind on Wednesday November 18, 2020 @03:54PM (#25142318)

How many people in the control group wore masks? It's not like they were told not to wear masks, they just weren't told to.

Edit: it actually looks like the study doesn't include that statistic at all, which is appallingly poor design.

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Re:Effectiveness of Mask Recommendation to Prevent SARS-CoV-... by goto11 on Wednesday November 18, 2020 @05:53PM (#25143694)

> It's not like they were told not to wear masks, they just weren't told to.

Why do you think that? The study says "A total of 3030 participants were randomly assigned to the recommendation to wear face masks, and 2994 were assigned not to wear face masks".

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Re:Effectiveness of Mask Recommendation to Prevent SARS-CoV-... by censorshipsci on Wednesday November 18, 2020 @04:14PM (#25142519)

Did you check the supplemental materials?

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