75
Twenty-nine research teams analyzed the same data, and they all reached different results.
(fivethirtyeight.com)
https://fivethirtyeight.com/features/science-isnt-broken/
Another study with the same goal of comparing the results from different research teams found similar disparities, though the graphs aren't quite as pretty.
Why have 4 of the studies seemingly not used error bars at all‽ Like I get that different analyses will arrive at different results, but they should always have error bars, right?