That's kind of a big question and you really should give us some sample data and code so we can see where you're starting from. But I think with `ggplot2` you could use `geom_point` to plot the circle, `geom_hline` to plot the confidence interval line, and `facet_wrap` to split into US and European samples.
– C. MurtaughMay 07 '23 at 19:15
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Agree with @C.Murtaugh - I would consider using `geom_segment` to plot the confidence interval line rather than `geom_hline`. Even better, check out `geom_pointrange` which is made for visualizing error. Check out this book: https://ggplot2-book.org/statistical-summaries.html
– mfg3z0May 08 '23 at 03:58
Good call on both `geom_segment` and `geom_pointrange`, the latter of which I didn't even know about until now.
– C. MurtaughMay 08 '23 at 13:05