Do you have any data on the percentage of active male developers who contribute to open source projects compared to active female developers? "Active" here meaning working on independent projects or the like but not actually contributing to anything open-source? I think it would be interesting to see the percentage of women who contribute to open source, and their relative skill levels, compared to the respective percentage of men. I think it could shed some insight into whether or not the women who do contribute to open source are more or less likely to be "capable" or more skillful, and give some added context to the results presented here. It wouldn't be enough to draw concrete conclusions, but it would provide another angle from which to look at this data.