Keith Humphreys sprinkles grains of salt on this study:

In the case of the pornography study, one of the authors was affiliated with the Adult Industry Medical Healthcare Foundation, which had a long term fiduciary relationship with the adult film industry. The same organization helped pay for the research (I could not find this acknowledged in the article, but the lead author so confirmed when asked).

Does this mean the study’s findings are wrong? No. But just as we would not uncritically accept findings that all pornography actresses are abuse victims if one of the authors were a board member of the League to Stamp Out Porn we should be skeptical of the present findings until they are replicated by a disinterested team of researchers.