The accounts that suggest 1 in 12 (or any other comparably low number) transsexuals are FTM almost always restrict their findings to people who have sex reassignment surgery involving their genitals, which FTMs often do not, and/or get their information in skewed ways (for example, many - possibly most - FTMs do not attend support group meetings and after transitioning are invisible and are never suspected of being a transsexual so end up being excluded from studies.