An interesting study whose results are presented as "men worry less than women" could easily be cast in the other direction.
A U.S. study found females more likely think negative events predict future events and this may explain why women perceive more risk and have more anxiety.
The study, published in Child Development, found that children and adults believe negative past events forecast negative future events, however, young girls and women more likely to believe negative past events predict future harm, compared to males.
But sometimes negative events do lead to more negative events, and "worry" is well-deserved. I think the study results would be more accurately reported if a word other than "worry" (which carries a negative connotation for the "worrier") were used.