I'm not OP but a quick google search did find a couple of articles on the subject.
Here's collaboration between several researchers with cited sources on general population face touching: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7362106/#__ffn_sectitle
Here is a peer reviewed article on healthcare professionals face touching: https://www.authorea.com/users/321745/articles/450942-frequency-of-face-touching-with-and-without-a-mask-in-healthcare-professionals?commit=7507e404230004811963671d461d6478872b9cec
Not trying to say anything, I'm not even totally sure on my own views on wearing masks yet. But, you did ask.
Edit: Just realised one of the articles I linked was the same as one posted above. I need to read a little more carefully before I post. I'm still leaving both links.