25 ms·

Note that this wasn't actually a study, they just looked at 6 other studies and based a consensus on that.

• zamfi 7y ago
  That alone doesn't make it "not a study"; it's a study of other studies, not a study with new data.
• medsiri 7y ago
  That is what we call a meta analysis. It is probably the best thing to look at if you are going to derive conclusions from science.