@bamfic@hub.spaz.org @crickxson Possible, but it doesn't explain why now the lowest rate is in Czechia: it was one of the most developed countries in the Eastern bloc so you would think they would also have the largest research infrastructure and the most heritage to reap from. And you wouldn't see Eastern Europe having a bigger divergence than Western when it comes to rates.
There are definitely countries that are doing much better than others (in 2013 70% of Albanian physics PhD were women) and I'm curious about the reason, but there may be a lot of variables to check. A look at other parts of the world is interesting too (e.g., Tunisia's rate is 55.4%, more than any European country).