You can read it here:

"Comparatively healthy, wealthy, and wise, these participants represent a somewhat privileged group of men with the disposable income and time necessary to sustain a long-term pattern of illicit activity with relative impunity."
 

Ain't it great to be old, healthy, lecherous and with disposable income?

I did manage to read some of it. I like the term "transactional sex"  

Astonishingly high numbers of bbfs.

Why should I care?  Why should anyone care?  IOW, why is this information useful or interesting to know?  I also wonder how accurate it is.  I mean, why would anyone give accurate info to someone about their whoremongering activities?

"Nevertheless, the uncomplicated and reliable access to willing sexual partners, even if remunerated, seemed to ensure that our participants could choose to participate in sexual activities as long as they were physically able"

If you don't understand that this report, based on serious inquiry, responds to and helps to refute many stupid cliches and stereotypes about older guys and sexuality, then perhaps you should go back and read it again.  Among the stereotypes it refutes:  old guys who want sex are just dirty old men; sex drive among men of a certain age is abnormal and indicative of depravity; younger attractive women cannot genuinely enjoy sex with older men, and on and on.  If this was a perfect world, such studies would not be necessary.  But since it is far from perfect or tolerant of normal human behavior we should be grateful for the efforts that go into bringing a modicum of understanding to a society that is truly in the dark ages about human sexuality, i. e. -- the gold old USA in 2016!

I answered the survey and I gave accurate info.  Don't know why I would not have, what would have been the point?

If respondents were truthful, it seems like BBFS happens probably more than most think.