The publicly available children maintenance service data (UK) suggests that one in three people are calling the wrong person dad (about a third of challenged women claiming child maintenance from a random dude will be shown to be wrong by DNA).
Mum will try to deny it. Then DNA became a thing for pennies. Join an genealogy fb group and support the broken kids looking for their now-dead fathers.
That... seems to be a bit of a leap. You've got to assume that challenged women are representative of the whole population. To issue a challenge you probably have some reason to suspect.
One in three is not one-in-ten one might expect. And it's not hundreds it's thousands of women making false claims for money against male victims.
We don't have population (in the statistical sense) data to know for sure. Maybe the passport biometric data will eventually let us know for sure.
However, there are other individuals involved, usually in the act of conception, not just women.
"I'm on the pill/implant/coil .. you don't have to wear a condom. Take the condom off.". A female paedophile teacher has just been jailed here because the baby made it kind-of obvious she was lying. Apparently she got pregnant whilst she was on bail with the same child.