Should I wear a mask to protect myself and others from contracting COVID-19?

(Decision to Make)

In order to help decide "Should I wear a mask to protect myself and others from contracting COVID-19", see a list of more specific questions answered below. If there are other specific questions you believe would be helpful for someone making this decision, add them by clicking "Add a Question".

Does a respirator/KN95/N95 mask reduce the chance of the wearer contracting COVID-19?
6 Studies (2017 to 2021)
Color key: Couldn't identify answer No Yes
Color key: Couldn't identify answer No Yes
Does a surgical mask reduce the chance of the wearer contracting COVID-19?
6 Studies (2017 to 2021)
Color key: Couldn't identify answer No Yes
Color key: Couldn't identify answer No Yes
Can prolonged use of a mask cause psychological discomfort?
1 Study
Color key: Couldn't identify answer No Yes
Color key: Couldn't identify answer No Yes
Does a wearing cloth mask reduce the likelihood of the wearer contracting COVID-19?
8 Studies (2020 to 2021)
Color key: Couldn't identify answer No Yes
Color key: Couldn't identify answer No Yes
Does prolonged use of a mask cause physical discomfort and irritation?
1 Study
Color key: Couldn't identify answer No Yes
Color key: Couldn't identify answer No Yes
NOT ANSWERED YET
Is a mask with an exhalation valve effective at protecting the wearer from COVID-19?
0 Studies