You'd need to narrow it down some - what percentage of women in "industry X" don't have kids. I don't know if the numbers would be significantly different, but they might for some industries.

In some industries you might not have a significant enough number of women to create a significant statistic.

I don't think people are necessarily saying that this assumption is or is not unfounded. But it should not be grounds for not hiring someone.

But what is the solution? Why should companies be responsible to pay for that risk? I think if society doesn't want women to be disadvantaged because of the "risk" of becoming family persons, then society should pay up, not companies.