The results show that wearing a mask led to a reduction of 2.76 cases per 100,000 people, and a 0.19 per cent reduction in the mortality rate worldwide.
The results show that wearing a mask led to a reduction of 2.76 cases per 100,000 people, and a 0.19 per cent reduction in the mortality rate worldwide.
That’s not how statistics works. You can have a significant effect with a tiny effect size, or a large effect size that on analysis turns out to be insignificant.