I read about how one of those "studies" was conducted (actually, "concocted would be more accurate). Apparently, questionnaires were left in gay bars bathhouse, and other similar places. The "researchers" then just took all that was written uncritically as gospel truth. Like, a bunch of (possibly inebriated, drugged, or just treating the forms as a joke) patrons could be interpreted as representative of the gay population especially in the early stages of the AIDS epidemic in the 70'S and 80'S. (Yes, they.date from that far back!) In other words, complete BS.