1. Stat #3 (of 3) from this study is the only section on Monogamy: Portland, Oregon, Sex Survey – 2018: A few stats from the PortlandMercury.com (Portland, Oregon) November 2018 semi-annual sex survey of 2,508 people (47% identify as cisgender women, 43% identify as cisgender men, 9% identify as genderqueer, nonbinary, or other, .70% identify as trans men and, and .29% identify as trans women)
