Quoting Destiel:" some of the comments are quite interesting to ... like how many of these households were traditional households where the women would just view sex as another household chore?"
Yeah, that's kinda where my mind went. Like... in the households that the women was expected and consistently did the majority of the housework-- was the man still assuming he should get laid X amount of times per week?
If the man was doing more housework, was there any correlation to simply being tired at the end of the day and not pursuing sex as often?
It'd be interesting to see a "traditional" household and a "non-traditional" (in this sense) get switched for a few months and see what happened to the amount of sex.