They only studied 51 people, FFS. What kind of a representative sample is that? This will probly show up on AgainstScience's web site now as proof of something about women in the Qur'an.
The only representation I should see is for you to stop typing, to go wash your hands and wipe that keyboard with something something.
This study reminds me of another study made that a bachelor's kitchen has less bacteria because wiping clean actually causes more germs to spread. So a lazy ass bachelor leaving things to pile up will actually have a cleaner kitchen overall.