Article says "The share of adults who say they regularly have friends over has declined 70 percent since 1975", but this may not be an accurate comparison:
> Until 1985, the survey included only married households.
Source: https://en.wikipedia.org/wiki/DDB_Needham_Life_Style_Surveys
Doesn't that seems like a more accurate measurement? what's the percentage of adults who check "yes" for "friends i'm hoping to hook up with" versus those that say "oooh, you mean actual friends"?
Quite frustrating as I can’t quite pin down how they adjust for this or whether there’s some massive discontinuity between ‘75 and ‘85